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Joseph Priestley

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For other people named similarly, see Priestley (disambiguation).
Quarter-length portrait of a man in a black coat against a purple and blue curtain backdrop.
Priestley by Ellen Sharples (1794)[1]

Joseph Priestley, FRS (13 March 1733 (O.S.) – 6 February 1804) was an 18th-century English theologian, Dissenting clergyman, natural philosopher, chemist, educator, and political theorist who published over 150 works. He is usually credited with the discovery of oxygen, having isolated it in its gaseous state, although Carl Wilhelm Scheele and Antoine Lavoisier also have a claim to the discovery.[2]

During his lifetime, Priestley's considerable scientific reputation rested on his invention of soda water, his writings on electricity, and his discovery of several "airs" (gases), the most famous being what Priestley dubbed "dephlogisticated air" (oxygen). However, Priestley's determination to defend phlogiston theory and to reject what would become the chemical revolution eventually left him isolated within the scientific community.

Priestley's science was integral to his theology, and he consistently tried to fuse Enlightenment rationalism with Christian theism.[3] In his metaphysical texts, Priestley attempted to combine theism, materialism, and determinism, a project that has been called "audacious and original".[4] He believed that a proper understanding of the natural world would promote human progress and eventually bring about the Christian Millennium.[4] Priestley, who strongly believed in the free and open exchange of ideas, advocated toleration and equal rights for religious Dissenters, which also led him to help found Unitarianism in England. The controversial nature of Priestley's publications combined with his outspoken support of the French Revolution aroused public and governmental suspicion; he was eventually forced to flee, in 1791, first to London, and then to the United States, after a mob burned down his home and church. He spent the last ten years of his life living in Northumberland County, Pennsylvania.

A scholar and teacher throughout his life, Priestley also made significant contributions to pedagogy, including the publication of a seminal work on English grammar, books on history, and he prepared some of the most influential early timelines. These educational writings were some of Priestley's most popular works. It was his metaphysical works, however, that had the most lasting influence: leading philosophers including Jeremy Bentham, John Stuart Mill, and Herbert Spencer credit them among the primary sources for utilitarianism.

Early life and education (1733–55)

Black-and-white drawing of a two-story brick house along a road.
Priestley's birthplace (since demolished) in Fieldhead, Birstall, West Yorkshire (about six miles (10 km) southwest of Leeds)[5]

Priestley was born to an established English Dissenting family (i.e., they did not conform to the Church of England) in Birstall, near Batley in the West Riding of Yorkshire. He was the oldest of six children born to Mary Swift and Jonas Priestley, a finisher of cloth. To ease his mother's burdens, Priestley was sent to live with his grandfather around the age of one; after his mother died five years later, he returned home. When his father remarried in 1741, Priestley went to live with his aunt and uncle, the wealthy and childless Sarah and John Keighley, 3 miles (5 km) from Fieldhead.[6] Because Priestley was precocious—at the age of four he could flawlessly recite all 107 questions and answers of the Westminster Shorter Catechism—his aunt sought the best education for the boy, intending him for the ministry. During his youth, Priestley attended local schools where he learned Greek, Latin, and Hebrew.[7]

Around 1749, Priestley became seriously ill and believed he was dying. Raised as a devout Calvinist, he believed a conversion experience was necessary for salvation, but doubted he had had one. This emotional distress eventually led him to question his theological upbringing, causing him to reject election and to accept universal salvation. As a result, the elders of his home church, the Independent Upper Chapel of Heckmondwike, refused him admission as a full member.[6][8]

Priestley's illness left him with a permanent stutter and he gave up any thoughts of entering the ministry at that time. In preparation for joining a relative in trade in Lisbon, he studied French, Italian, and German in addition to Chaldean, Syrian, and Arabic. He was tutored by the Reverend George Haggerstone, who first introduced him to higher mathematics, natural philosophy, logic, and metaphysics through the works of Isaac Watts, Willem 's Gravesande, and John Locke.[9]

Daventry Academy

Priestley eventually decided to return to his theological studies and, in 1752, matriculated at Daventry, a Dissenting academy.[10] Because he had already read widely, Priestley was allowed to skip the first two years of coursework. He continued his intense study; this, together with the liberal atmosphere of the school, shifted his theology further leftward and he became a Rational Dissenter. Abhorring dogma and religious mysticism, Rational Dissenters emphasized the rational analysis of the natural world and the Bible.[11]

Priestley later wrote that the book that influenced him the most, save the Bible, was David Hartley's Observations on Man (1749). Hartley's psychological, philosophical, and theological treatise postulated a material theory of mind. Hartley aimed to construct a Christian philosophy in which both religious and moral "facts" could be scientifically proven, a goal that would occupy Priestley for his entire life. In his third year at Daventry, Priestley committed himself to the ministry, which he described as "the noblest of all professions".[12]

Needham Market and Nantwich (1755–61)

Page reads: "The Rudiments of English Grammar; Adapted to the Use of Schools, with Observations on Style. By Joseph Priestley. London: Printed for R. Griffiths, in the Strand. M.DCC.LXI."
Title page from Rudiments of English Grammar (1761)
Further information: [[:Joseph Priestley and education]]

Robert Schofield, Priestley's major modern biographer, describes his first "call" in 1755 to the Dissenting parish in Needham Market, Suffolk, as a "mistake" for both Priestley and the congregation.[13] Priestley yearned for urban life and theological debate, whereas Needham Market was a small, rural town with a congregation wedded to tradition. Attendance and donations dropped sharply when they discovered the extent of his heterodoxy. Although Priestley's aunt had promised her support if he became a minister, she refused any further assistance when she realized he was no longer a Calvinist. To earn extra money, Priestley proposed opening a school, but local families informed him that they would refuse to send their children. He also presented a series of scientific lectures titled "Use of the Globes" that was more successful.[14]

Priestley's Daventry friends helped him obtain another position and in 1758 he moved to Nantwich, Cheshire; his time there was happier. The congregation cared less about Priestley's heterodoxy and he successfully established a school. Unlike many schoolmasters of the time, Priestley taught his students natural philosophy and even bought scientific instruments for them. Appalled at the quality of the available English grammar books, Priestley wrote his own: The Rudiments of English Grammar (1761).[15] His innovations in the description of English grammar, particularly his efforts to disassociate it from Latin grammar, led 20th-century scholars to describe him as "one of the great grammarians of his time".[16] After the publication of Rudiments and the success of Priestley's school, Warrington Academy offered him a teaching position in 1761.[17]

Warrington Academy (1761–67)

Quarter-length portrait of a woman in a brown and gray lace bonnet adorned with a bow and leaning on her right hand.
Mary Priestley, by Carl F. von Breda (1793);[18] daughter of ironmaster Isaac Wilkinson, sister of industrialist John Wilkinson

In 1761, Priestley moved to Warrington and assumed the post of tutor of modern languages and rhetoric at the town's Dissenting academy, although he would have preferred to teach mathematics and natural philosophy. He fitted in well at Warrington, and made friends quickly. On 23 June 1762, he married Mary Wilkinson of Wrexham. Of his marriage, Priestley wrote:

This proved a very suitable and happy connexion, my wife being a woman of an excellent understanding, much improved by reading, of great fortitude and strength of mind, and of a temper in the highest degree affectionate and generous; feeling strongly for others, and little for herself. Also, greatly excelling in every thing relating to household affairs, she entirely relieved me of all concern of that kind, which allowed me to give all my time to the prosecution of my studies, and the other duties of my station.[19]

On 17 April 1763, they had a daughter, whom they named Sarah after Priestley's aunt.[20]

Educator and historian

Further information: [[:Joseph Priestley and education]]

All of the books Priestley published while at Warrington emphasized the study of history; Priestley considered it essential for worldly success as well as religious growth. He wrote histories of science and Christianity in an effort to reveal the progress of humanity and, paradoxically, the loss of a pure, "primitive Christianity".[21]

A timeline, showing major civilisations
A redacted version of A New Chart of History (1765); Priestley believed this chart would "impress" upon students "a just image of the rise, progress, extent, duration, and contemporary state of all the considerable empires that have ever existed in the world".[22]

In his Essay on a Course of Liberal Education for Civil and Active Life (1765),[23] Lectures on History and General Policy (1788), and other works, Priestley argued that the education of the young should anticipate their future practical needs. This principle of utility guided his unconventional curricular choices for Warrington's aspiring middle-class students. He recommended modern languages instead of classical languages and modern rather than ancient history. Priestley's lectures on history were particularly revolutionary; he narrated a providentialist and naturalist account of history, arguing that the study of history furthered the comprehension of God's natural laws. Furthermore, his millennial perspective was closely tied to his optimism regarding scientific progress and the improvement of humanity. He believed that each age would improve upon the previous and that the study of history allowed people to perceive and to advance this progress. Since the study of history was a moral imperative for Priestley, he also promoted the education of middle-class women, which was unusual at the time.[24] Some scholars of education have described Priestley as the most important English writer on education between the 17th-century John Locke and the 19th-century Herbert Spencer.[25] Lectures on History was well-received and was employed by many educational institutions, such as New College at Hackney, Brown, Princeton, Yale, and Cambridge.[26] Priestley designed two Charts to serve as visual study aides for his Lectures.[27] These charts are in fact timelines; they have been described as the most influential timelines published in the 18th century.[28] Both were popular for decades, and the trustees of Warrington were so impressed with Priestley's lectures and charts that they arranged for the University of Edinburgh to grant him a Doctor of Law degree in 1764.[29]

History of Electricity

Priestley's "electrical machine for amateur experimentalists", illustrated in the first edition of his Familiar Introduction to the Study of Electricity (1768).

The intellectually stimulating atmosphere of Warrington, often called the "Athens of the North" during the 18th century, encouraged Priestley's growing interest in natural philosophy. He gave lectures on anatomy and performed experiments regarding temperature with another tutor at Warrington, his friend John Seddon.[30] Despite Priestley's busy teaching schedule, he decided to write a history of electricity. Friends introduced him to the major experimenters in the field in Britain—John Canton, William Watson, and the visiting Benjamin Franklin—who encouraged Priestley to perform the experiments he wanted to include in his history. In the process of replicating others' experiments, Priestley became intrigued by unanswered questions and was prompted to undertake experiments of his own design.[31] (Impressed with his Charts and the manuscript of his history of electricity, Canton, Franklin, Watson, and Richard Price nominated Priestley for a fellowship in the Royal Society; he was accepted in 1766.)[32]

In 1767, the 700-page The History and Present State of Electricity was published to positive reviews.[33] The first half of the text is a history of the study of electricity to 1766; the second and more influential half is a description of contemporary theories about electricity and suggestions for future research. Priestley reported some of his own discoveries in the second section, such as the conductivity of charcoal and other substances and the continuum between conductors and non-conductors.[34] This discovery overturned what he described as "one of the earliest and universally received maxims of electricity", that only water and metals could conduct electricity. This and other experiments on the electrical properties of materials and on the electrical effects of chemical transformations demonstrated Priestley's early and ongoing interest in the relationship between chemical substances and electricity.[35] Based on experiments with charged spheres, Priestley was among the first to propose that electrical force followed an inverse-square law, similar to Newton's law of universal gravitation.[36][37] However, he did not generalize or elaborate on this,[34] and the general law was enunciated by French physicist Charles-Augustin de Coulomb in the 1780s.

Priestley's strength as a natural philosopher was qualitative rather than quantitative and his observation of "a current of real air" between two electrified points would later interest Michael Faraday and James Clerk Maxwell as they investigated electromagnetism. Priestley's text became the standard history of electricity for over a century; Alessandro Volta (who later invented the battery), William Herschel (who discovered infrared radiation), and Henry Cavendish (who discovered hydrogen) all relied upon it. Priestley wrote a popular version of the History of Electricity for the general public titled A Familiar Introduction to the Study of Electricity (1768).[38] He marketed the book with his brother Timothy, but unsuccessfully.[39] Also he was a big ugly poo!

Leeds (1767–73)

Half-length portrait of a man holding a small book in his right hand. He is wearing a black jacket and a white shirt.
The earliest known portrait of Priestley, known as the "Leeds" portrait (c. 1763); Except for his membership on the Leeds Library Committee Priestley was not active in the town's social life.[40]

Perhaps prompted by Mary Priestley's ill health, or financial problems, or a desire to prove himself to the community that had rejected him in his childhood, Priestley moved with his family from Warrington to Leeds in 1767, and he became Mill Hill Chapel's minister. Two sons were born to the Priestleys in Leeds: Joseph junior on 24 July 1768 and William three years later. Theophilus Lindsey, a rector at Catterick, Yorkshire, became one of Priestley's few friends in Leeds, of whom he wrote: "I never chose to publish any thing of moment relating to theology, without consulting him."[41] Although Priestley had extended family living around Leeds, it does not appear that they communicated. Schofield conjectures that they considered him a heretic.[42] Each year Priestley traveled to London to consult with his close friend and publisher, Joseph Johnson, and to attend meetings of the Royal Society.[43]

Minister of Mill Hill Chapel

Further information: [[:Joseph Priestley and education]] and [[:Joseph Priestley and Dissent]]
Page reads: "Institutes of Natural and Revealed Religion. In Two Volumes. Two which is prefixed, An Essay on the best Method of communicating religious Knowledge to the Members of Christian Societies. By Joseph Priestley, LL.D. F.R.S. The Second Edition. vol. I. Wisdom is the principal Thing. Solomon. Birmingham, Printed by Pearson and Rollason, for J. Johnson, No. 72, St. Paul's Church-Yard, London. M DCC LXXXIII."
Priestley had been working on Institutes of Natural and Revealed Religion since his Daventry days.

When Priestley became its minister, Mill Hill Chapel was one of the oldest and most respected Dissenting congregations in England; however, during the early 18th century the congregation had fractured along doctrinal lines, and was losing members to the charismatic Methodist movement.[44] Priestley believed that by educating the young, he could strengthen the bonds of the congregation.[45]

In his magisterial three-volume Institutes of Natural and Revealed Religion (1772–74),[46] Priestley outlined his theories of religious instruction. More importantly, he laid out his belief in Socinianism. The doctrines he explicated would become the standards for Unitarians in Britain. This work marked a change in Priestley's theological thinking that is critical to understanding his later writings—it paved the way for his materialism and necessitarianism (the belief that a divine being acts in accordance with necessary metaphysical laws).[47]

Priestley's major argument in the Institutes was that the only revealed religious truths that could be accepted were those that matched one's experience of the natural world. Because his views of religion were deeply tied to his understanding of nature, the text's theism rested on the argument from design.[48] The Institutes shocked and appalled many readers, primarily because it challenged basic Christian orthodoxies, such as the divinity of Christ and the miracle of the Virgin Birth. Methodists in Leeds penned a hymn asking God to "the Unitarian fiend expel / And chase his doctrine back to Hell."[49] Priestley wanted to return Christianity to its "primitive" or "pure" form by eliminating the "corruptions" which had accumulated over the centuries. The fourth part of the Institutes, An History of the Corruptions of Christianity, became so long that he was forced to issue it separately in 1782. Priestley believed that the Corruptions was "the most valuable" work he ever published. In demanding that his readers apply the logic of the emerging sciences and comparative history to the Bible and Christianity, he alienated religious and scientific readers alike—scientific readers did not appreciate seeing science used in the defense of religion and religious readers dismissed the application of science to religion.[50]

Religious controversialist

Priestley engaged in numerous political and religious pamphlet wars. According to Schofield, "he entered each controversy with a cheerful conviction that he was right, while most of his opponents were convinced, from the outset, that he was willfully and maliciously wrong. He was able, then, to contrast his sweet reasonableness to their personal rancor."[51] However, as Schofield points out, Priestley rarely altered his opinion as a result of these debates.[51] While at Leeds, he wrote controversial pamphlets on the Lord's Supper and on Calvinist doctrine; thousands of copies were published, making them some of Priestley's most widely read works.[52]

Priestley founded the Theological Repository in 1768, a journal committed to the open and rational inquiry of theological questions. Although he promised to print any contribution, only like-minded authors submitted articles. He was therefore obliged to provide much of the journal's content himself (this material became the basis for many of his later theological and metaphysical works). After only a few years, due to a lack of funds, he was forced to cease publishing the journal.[53] He revived it in 1784 with similar results.[54]

Defender of Dissenters and political philosopher

Further information: [[:Joseph Priestley and Dissent]]
Page reads: "An Essay on the First Principles of Government, and on the Nature of Political, Civil, and Religious Liberty, including Remarks on Dr. Brown's Code of Education, and on Br. Balguy's Sermon on Church Authority. The Second Edition, corrected and enlarged, by Joseph Priestley, LL.D. F.R.S. London: Printed for J. Dodsley, in Pall-Mall; T. Cadell, (successor to Mr. Millar) in the Strand; and J. Johnson, No. 72 in St. Paul's Church-Yard. MDCCLXXI."
Essay on the First Principles of Government (1768) influenced early 19th-century political philosophers, including Jeremy Bentham.[55]

Many of Priestley's political writings supported the repeal of the Test and Corporation Acts, which restricted the rights of Dissenters. They could not hold political office, serve in the armed forces, or attend Oxford and Cambridge unless they subscribed to the Thirty-nine Articles of the Church of England. Dissenters repeatedly petitioned Parliament to repeal the Acts, arguing that they were being treated as second-class citizens.[56]

Priestley's friends, particularly other Rational Dissenters, urged him to publish a work on the injustices experienced by Dissenters; the result was his Essay on the First Principles of Government (1768).[57] An early work of modern liberal political theory and Priestley's most thorough treatment of the subject, it—unusually for the time—distinguished political rights from civil rights with precision and argued for expansive civil rights. Priestley identified separate private and public spheres, contending that the government should only have control over the public sphere. Education and religion, in particular, he maintained, were matters of private conscience and should not be administered by the state. Priestley's later radicalism emerged from his belief that the British government was infringing upon these individual freedoms.[58]

Priestley also defended the rights of Dissenters against the attacks of William Blackstone, an eminent legal theorist, whose Commentaries on the Laws of England (1765–69) had become the standard legal guide. Blackstone's book stated that dissent from the Church of England was a crime and that Dissenters could not be loyal subjects. Furious, Priestley lashed out with his Remarks on Dr. Blackstone's Commentaries (1769), correcting Blackstone's interpretation of the law, his grammar (a highly politicized subject at the time), and history.[59] Blackstone, chastened, altered subsequent editions of his Commentaries: he rephrased the offending passages and removed the sections claiming that Dissenters could not be loyal subjects, but he retained his description of Dissent as a crime.[60]

Natural philosopher: electricity, Optics, and soda water

Although Priestley claimed that natural philosophy was only a hobby, he took it seriously. In his History of Electricity, he described the scientist as promoting the "security and happiness of mankind".[61] Priestley's science was eminently practical and he rarely concerned himself with theoretical questions; his model was Benjamin Franklin. When he moved to Leeds, Priestley continued his electrical and chemical experiments (the latter aided by a steady supply of carbon dioxide from a neighboring brewery). Between 1767 and 1770, he presented five papers to the Royal Society from these initial experiments; the first four papers explored coronal discharges and other phenomena related to electrical discharge, while the fifth reported on the conductivity of charcoals from different sources. His subsequent experimental work focused on chemistry and pneumatics.[62]

Priestley published the first volume of his projected history of experimental philosophy, The History and Present State of Discoveries Relating to Vision, Light and Colours (referred to as his Optics), in 1772.[63] He paid careful attention to the history of optics and presented excellent explanations of early optics experiments, but his mathematical deficiencies caused him to dismiss several important contemporary theories. Furthermore, he did not include any of the practical sections that had made his History of Electricity so useful to practicing natural philosophers. Unlike his History of Electricity, it was not popular and had only one edition, although it was the only English book on the topic for 150 years. The hastily written text sold poorly; the cost of researching, writing, and publishing the Optics convinced Priestley to abandon his history of experimental philosophy.[64]

Priestley was considered for the position of astronomer on James Cook's second voyage to the South Seas, but was not chosen. Still, he contributed in a small way to the voyage: he provided the crew with a method for making soda water, which he erroneously speculated might be a cure for scurvy. He then published a pamphlet with Directions for Impregnating Water with Fixed Air (1772).[65] Priestley did not exploit the commercial potential of soda water, but others such as J. J. Schweppe made fortunes from it.[66] In 1773, the Royal Society recognized Priestley's achievements in natural philosophy by awarding him the Copley Medal.[67]

Priestley's friends wanted to find him a more financially secure position. In 1772, prompted by Richard Price and Benjamin Franklin, Lord Shelburne wrote to Priestley asking him to direct the education of his children and to act as his general assistant. Although Priestley was reluctant to sacrifice his ministry, he accepted the position, resigning from Mill Hill Chapel on 20 December 1772, and preaching his last sermon on 16 May 1773.[68]

Calne (1773–80)

Portrait of a man sitting on a chair and leaning against a table with books and papers.
Engraving by Charles A. E. Turner (1836) of a Priestley portrait commissioned by his publisher and close friend Joseph Johnson from Henry Fuseli (c. 1783)[69]

In 1773, the Priestleys moved to Calne and a year later Lord Shelburne and Priestley took a tour of Europe. According to Priestley's close friend Theophilus Lindsey, Priestley was "much improved by this view of mankind at large".[70] Upon their return, Priestley easily fulfilled his duties as librarian and tutor. The workload was intentionally light, allowing him time to pursue his scientific investigations and theological interests. Priestley also became a political adviser to Shelburne, gathering information on parliamentary issues and serving as a liaison between Shelburne and the Dissenting and American interests. When the Priestleys' third son was born on 24 May 1777, they named him Henry at the lord's request.[71]

Materialist philosopher

Further information: [[:Joseph Priestley and Dissent]]
Page reads: "Disquisitions relating to Matter and Spirit. To which is added, The History of the Philosophical Doctrine concerning the Origin of the Soul, and the Nature of Matter; with its Influence on Christianity, especially with Respect to the Doctrine of the Pre-existence of Christ."
By 1782, at least a dozen hostile refutations were published to Disquisitions relating to Matter and Spirit and Priestley was branded an atheist.[72]

Priestley wrote his most important philosophical works during his years with Lord Shelburne. In a series of major metaphysical texts published between 1774 and 1780—An Examination of Dr. Reid's Inquiry into the Human Mind (1774), Hartley's Theory of the Human Mind on the Principle of the Association of Ideas (1775), Disquisitions relating to Matter and Spirit (1777), The Doctrine of Philosophical Necessity Illustrated (1777), and Letters to a Philosophical Unbeliever (1780)—he argues for a philosophy that incorporates four concepts: determinism, materialism, causation, and necessitarianism. By studying the natural world, he argued, people would learn how to become more compassionate, happy, and prosperous.[73]

Priestley strongly suggested that there is no mind-body duality, and put forth a materialist philosophy in these works; that is, one founded on the principle that everything in the universe is made of matter that we can perceive. He also contended that discussing the soul is impossible because it is made of a divine substance, and humanity cannot perceive the divine. Despite his separation of the divine from the mortal, this position shocked and angered many of his readers, who believed that such a duality was necessary for the soul to exist.[74]

Responding to Baron d'Holbach's Système de la Nature (1770) and David Hume's Dialogues Concerning Natural Religion (1779) as well as the works of the French philosophers, Priestley maintained that materialism and determinism could be reconciled with a belief in God. He criticized those whose faith was shaped by books and fashion, drawing an analogy between the skepticism of educated men and the credulity of the masses.[75]

Maintaining that humans had no free will, Priestley argued that what he called "philosophical necessity" (akin to absolute determinism) is consonant with Christianity, a position based on his understanding of the natural world. Like the rest of nature, man's mind is subject to the laws of causation, Priestley contended, but because a benevolent God created these laws, the world and the people in it will eventually be perfected. Evil is therefore only an imperfect understanding of the world.[76]

Although Priestley's philosophical work has been characterized as "audacious and original",[4][77] it partakes of older philosophical traditions on the problems of free will, determinism, and materialism.[78] For example, the 17th-century philosopher Baruch Spinoza argued for absolute determinism and absolute materialism.[79] Like Spinoza[80] and Priestley,[81] Leibniz argued that human will was completely determined by natural laws;[82] however, unlike them, Leibniz argued for a "parallel universe" of immaterial objects (such as human souls) so arranged by God that its outcomes agree exactly with those of the material universe.[83] Leibniz[84] and Priestley[85] share an optimism that God has chosen the chain of events benevolently; however, Priestley believed that the events were leading to a glorious Millennial conclusion,[4] whereas for Leibniz the entire chain of events was optimal in and of itself, as compared with other conceivable chains of events.[86]

Founder of Unitarianism

See also: History of Unitarianism

When Priestley's friend Theophilus Lindsey decided to found a new Christian denomination that would not restrict its members' beliefs, Priestley and others hurried to his aid. On 17 April 1774, Lindsey held the first Unitarian service in Britain, at the newly formed Essex Street Chapel in London; he had even designed his own liturgy, of which many were critical. Priestley defended his friend in the pamphlet Letter to a Layman, on the Subject of the Rev. Mr. Lindsey's Proposal for a Reformed English Church (1774),[87] claiming that only the form of worship had been altered, not its substance, and attacking those who followed religion as a fashion. Priestley attended Lindsey's church regularly in the 1770s and occasionally preached there.[88] He continued to support institutionalized Unitarianism for the rest of his life, writing several Defenses of Unitarianism and encouraging the foundation of new Unitarian chapels throughout Britain and the United States.[89]

Experiments and Observations on Different Kinds of Air

See also: Wikisource:An Inventory of the Furniture in Dr. Priestley's Study
Engraving of assorted scientific equipment, such as a pneumatic trough. A dead mouse rests under one glass canister.
Equipment used by Priestley in his experiments on gases

Priestley's years in Calne were the only ones in his life dominated by scientific investigations; they were also the most scientifically fruitful. His experiments were almost entirely confined to "airs", and out of this work emerged his most important scientific texts: the six volumes of Experiments and Observations on Different Kinds of Air (1774–86).[90][91] These experiments helped repudiate the last vestiges of the theory of four elements, which Priestley attempted to replace with his own variation of phlogiston theory. According to that 18th century theory, the combustion or oxidation of a substance corresponded to the release of a material substance, phlogiston.[92]

Priestley's work on "airs" is not easily classified. As historian of science Simon Schaffer writes, it "has been seen as a branch of physics, or chemistry, or natural philosophy, or some highly idiosyncratic version of Priestley's own invention".[93] Furthermore, the volumes were both a scientific and a political enterprise for Priestley, in which he argues that science could destroy "undue and usurped authority" and that government has "reason to tremble even at an air pump or an electrical machine".[94]

Volume I of Experiments and Observations on Different Kinds of Air outlined several discoveries: "nitrous air" (nitric oxide, NO); "vapor of spirit of salt", later called "acid air" or "marine acid air" (anhydrous hydrochloric acid, HCl); "alkaline air" (ammonia, NH3); "diminished" or "dephlogisticated nitrous air" (nitrous oxide, N2O); and, most famously, "dephlogisticated air" (oxygen, O2) as well as experimental findings that would eventually lead to the discovery of photosynthesis. Priestley also developed a "nitrous air test" to determine the "goodness of air". Using a pneumatic trough, he would mix nitrous air with a test sample, over water or mercury, and measure the decrease in volume—the principle of eudiometry.[95] After a small history of the study of airs, he explained his own experiments in an open and sincere style. As an early biographer writes, "whatever he knows or thinks he tells: doubts, perplexities, blunders are set down with the most refreshing candour."[96] Priestley also described his cheap and easy-to-assemble experimental apparatus; his colleagues therefore believed that they could easily reproduce his experiments.[97] Faced with inconsistent experimental results, Priestley employed phlogiston theory. This, however, led him to conclude that there were only three types of "air": "fixed", "alkaline", and "acid". Priestley dismissed the burgeoning chemistry of his day. Instead, he focused on gases and "changes in their sensible properties", as had natural philosophers before him. He isolated carbon monoxide (CO), but apparently did not realize that it was a separate "air".[98]

Discovery of oxygen

See also: Wikisource:The Mouse's Petition
Photograph of a laboratory, with glass-encased, wooden bookcases on two walls and a window on the third. There is a display case in the middle of the room.
The laboratory where Priestley discovered oxygen at Bowood House.

In August 1774 he isolated an "air" that appeared to be completely new, but he did not have an opportunity to pursue the matter because he was about to tour Europe with Shelburne. While in Paris, however, Priestley managed to replicate the experiment for others, including French chemist Antoine Lavoisier. After returning to Britain in January 1775, he continued his experiments and discovered "vitriolic acid air" (sulfur dioxide, SO2).

In March he wrote to several people regarding the new "air" that he had discovered in August. One of these letters was read aloud to the Royal Society, and a paper outlining the discovery, titled "An Account of further Discoveries in Air", was published in the Society's journal Philosophical Transactions.[99] Priestley called the new substance "dephlogisticated air" which he made in the famous experiment by focusing the sun's rays on a sample of mercuric oxide. He first tested it on mice, who surprised him by surviving quite a while entrapped with the air, and then on himself, writing that it was "five or six times better than common air for the purpose of respiration, inflammation, and, I believe, every other use of common atmospherical air".[100] He had discovered oxygen gas (O2).

Half-length portrait of a man wearing furred robes and a white wig and looking regal. Underneath his white robes, he is wearing red and gold and he is sitting in a red chair.
William Petty, 2nd Earl of Shelburne, built a laboratory for Priestley at Bowood House.

Priestley assembled his oxygen paper and several others into a second volume of Experiments and Observations on Air, published in 1776. He did not emphasize his discovery of "dephlogisticated air" (leaving it to Part III of the volume) but instead argued in the preface how important such discoveries were to rational religion. His paper narrated the discovery chronologically, relating the long delays between experiments and his initial puzzlements; thus, it is difficult to determine when exactly Priestley "discovered" oxygen.[101] Such dating is significant as both Lavoisier and Swedish pharmacist Carl Wilhelm Scheele have strong claims to the discovery of oxygen as well, Scheele having been the first to isolate the gas (although he published after Priestley) and Lavoisier having been the first to describe it as purified "air itself entire without alteration" (that is, the first to explain oxygen without phlogiston theory).[102]

In his paper "Observations on Respiration and the Use of the Blood", Priestley was the first to suggest a connection between blood and air, although he did so using phlogiston theory. In typical Priestley fashion, he prefaced the paper with a history of the study of respiration. A year later, clearly influenced by Priestley, Lavoisier was also discussing respiration at the Académie des sciences. Lavoisier's work began the long train of discovery that produced papers on oxygen respiration and culminated in the overthrow of phlogiston theory and the establishment of modern chemistry.[103]

Around 1779 Priestley and Shelburne had a rupture, the precise reasons for which remain unclear. Shelburne blamed Priestley's health, while Priestley claimed Shelburne had no further use for him. Some contemporaries speculated that Priestley's outspokenness had hurt Shelburne's political career. Schofield argues that the most likely reason was Shelburne's recent marriage to Louisa Fitzpatrick—apparently, she did not like the Priestleys. Although Priestley considered moving to America, he eventually accepted Birmingham New Meeting's offer to be their minister.[104]

Birmingham (1780–91)

In 1780 the Priestleys moved to Birmingham and spent a happy decade surrounded by old friends, until they were forced to flee in 1791 by religiously motivated mob violence. Priestley accepted the ministerial position at New Meeting on the condition that he be required to preach and teach only on Sundays, so that he would have time for his writing and scientific experiments. As in Leeds, Priestley established classes for the youth of his parish and by 1781, he was teaching 150 students. Because Priestley's New Meeting salary was only 100 guineas, friends and patrons donated money and goods to help continue his investigations.[105]

Chemical Revolution

See also: Chemical Revolution

Many of the friends that Priestley made in Birmingham were members of the Lunar Society, a group of manufacturers, inventors, and natural philosophers who assembled monthly to discuss their work. The core of the group included men such as the manufacturer Matthew Boulton, the chemist and geologist James Keir, the inventor and engineer James Watt, and the botanist, chemist, and geologist William Withering. Priestley was asked to join this unique society and contributed much to the work of its members.[106] As a result of this stimulating intellectual environment, he published several important scientific papers, including "Experiments relating to Phlogiston, and the seeming Conversion of Water into Air" (1783). The first part attempts to refute Lavoisier's challenges to his work on oxygen; the second part describes how steam is "converted" into air. After several variations of the experiment, with different substances as fuel and several different collecting apparatuses (which produced different results), he concluded that air could travel through more substances than previously surmised, a conclusion "contrary to all the known principles of hydrostatics".[107] This discovery, along with his earlier work on what would later be recognized as gaseous diffusion, would eventually lead John Dalton and Thomas Graham to formulate the kinetic theory of gases.[108]

Full-length portraits of a man and a woman. The man is seated at a table covered with a bright red cloth, looking up at the woman, and she is looking out at the viewer. They occupy the bottom half of the painting, while the top half resembles marble and pillars. She is wearing a white dress with a blue sash and he is wearing a dark colored suit. Glass chemistry equipment sits on the table and on the floor.
Antoine Lavoisier and his wife by Jacques-Louis David

In 1777, Antoine Lavoisier had published Réflexions sur le phlogistique pour servir de suite à la théorie de la combustion et de la calcination, the first of what proved to be a series of attacks on phlogiston theory; it was against these attacks that Priestley responded in 1783. While Priestley accepted parts of Lavoisier's theory, he was unprepared to assent to the major revolutions Lavoisier proposed: the overthrow of phlogiston, a chemistry conceptualized around elements and compounds, and a new chemical nomenclature. Priestley's original experiments on "dephlogisticated air" (oxygen), combustion, and water provided Lavoisier with the data he needed to construct much of his system; yet Priestley never accepted Lavoisier's new theories and continued to defend phlogiston theory for the rest of his life. Lavoisier's system was based largely on the quantitative concept that mass is neither created nor destroyed in chemical reactions (i.e., the conservation of mass). By contrast, Priestley preferred to observe qualitative changes in heat, color, and particularly volume. His experiments tested "airs" for "their solubility in water, their power of supporting or extinguishing flame, whether they were respirable, how they behaved with acid and alkaline air, and with nitric oxide and inflammable air, and lastly how they were affected by the electric spark."[109]

By 1789, when Lavoisier published his Traité Élémentaire de Chimie and founded the Annales de Chimie, the new chemistry had come into its own. Priestley published several more scientific papers in Birmingham, the majority attempting to refute Lavoisier. Priestley and other Lunar Society members argued that the new French system was too expensive, too difficult to test, and unnecessarily complex. Priestley in particular rejected its "establishment" aura. In the end, Lavoisier's view prevailed: his new chemistry introduced many of the principles on which modern chemistry is founded.[110]

Priestley's refusal to accept Lavoisier's "new chemistry" — such as the conservation of mass — and his determination to adhere to a less satisfactory theory has perplexed many scholars.[111] Schofield explains it thus: "Priestley was never a chemist; in a modern, and even a Lavoisian, sense, he was never a scientist. He was a natural philosopher, concerned with the economy of nature and obsessed with an idea of unity, in theology and in nature."[112] Historian of science John McEvoy largely agrees, writing that Priestley's view of nature as coextensive with God and thus infinite, which encouraged him to focus on facts over hypotheses and theories, prompted him to reject Lavoisier's system.[113] McEvoy argues that "Priestley's isolated and lonely opposition to the oxygen theory was a measure of his passionate concern for the principles of intellectual freedom, epistemic equality and critical inquiry."[114] Priestley himself claimed in the last volume of Experiments and Observations that his most valuable works were his theological ones because they were "superior [in] dignity and importance".[115]

Defender of English Dissenters and French revolutionaries

Further information: Joseph Priestley and Dissent; see also: Commons:Joseph Priestley Cartoons
Caricature of man in frock coat and wig trampling on sacred documents and burning others.
DOCTOR PHLOGISTON,
The PRIESTLEY politician or the Political Priest
---- This anti-Priestley cartoon shows him trampling on the Bible and burning documents representing English freedom. "Essays on Matter and Spirit", "Gunpowder", and "Revolution Toasts" bulge from his pockets.

Although Priestley was busy defending phlogiston theory from the "new chemists", most of what he published in Birmingham was theological. In 1782 he published the fourth volume of his Institutes, An History of the Corruptions of Christianity, describing how he thought the teachings of the early Christian church had been "corrupted" or distorted.[116] Schofield describes the work as "derivative, disorganized, wordy, and repetitive, detailed, exhaustive, and devastatingly argued".[117] The text addresses issues ranging from the divinity of Christ to the proper form for the Lord's Supper. Priestley followed up in 1786 with the provocatively titled book, An History of Early Opinions concerning Jesus Christ, compiled from Original Writers, proving that the Christian Church was at first Unitarian. Thomas Jefferson would later write of the profound effect that these two books had on him: "I have read his Corruptions of Christianity, and Early Opinions of Jesus, over and over again; and I rest on them ... as the basis of my own faith. These writings have never been answered."[118] Although a few readers such as Jefferson and other Rational Dissenters approved of the work, it was harshly reviewed because of its extreme theological positions, particularly its rejection of the Trinity.[119]

In 1785, while Priestley was engaged in a pamphlet war over Corruptions, he also published The Importance and Extent of Free Enquiry, claiming that the Reformation had not really reformed the church.[120] In words that would boil over into a national debate, he challenged his readers to enact change:

Let us not, therefore, be discouraged, though, for the present, we should see no great number of churches professedly unitarian .... We are, as it were, laying gunpowder, grain by grain, under the old building of error and superstition, which a single spark may hereafter inflame, so as to produce an instantaneous explosion; in consequence of which that edifice, the erection of which has been the work of ages, may be overturned in a moment, and so effectually as that the same foundation can never be built upon again ....[121]

Although discouraged by friends from using such inflammatory language, Priestley refused to back down from his opinions in print and he included it, forever branding himself as "Gunpowder Joe". After the publication of this seeming call for revolution in the midst of the French Revolution, pamphleteers stepped up their attacks on Priestley and he and his church were even threatened with legal action.[122]

Caricature of a man preaching out of a barrel labeled "Fanaticism", stacked up on books labeled "Priestley's works" to a crowd, while the devil sneaks up on him.
"A Word of Comfort" by William Dent (dated 22 March 1790). Priestley, preaching in front of Charles James Fox who asks "Pray, Doctor is there such a thing as a Devil?", to which Priestley responds "No" while the devil prepares to attack Priestley from behind.

In 1787, 1789, and 1790, Dissenters again tried to repeal the Test and Corporation Acts. Although initially it looked as if they might succeed, by 1790, with the fears of revolution looming in Parliament, few were swayed by appeals to equal rights. Political cartoons, one of the most effective and popular media of the time, skewered the Dissenters and Priestley.[123] In Parliament, William Pitt and Edmund Burke argued against the repeal, a betrayal that angered Priestley and his friends, who had expected the two men's support. Priestley wrote a series of Letters to William Pitt[124] and Letters to Burke[125] in an attempt to persuade them otherwise, but these publications only further inflamed the populace against him.

Dissenters such as Priestley who supported the French Revolution came under increasing suspicion as skepticism regarding the revolution grew.[126] In its propaganda against "radicals", Pitt's administration used the "gunpowder" statement to argue that Priestley and other Dissenters wanted to overthrow the government. Burke, in his famous Reflections on the Revolution in France (1790), tied natural philosophers, and specifically Priestley, to the French Revolution, writing that radicals who supported science in Britain "considered man in their experiments no more than they do mice in an air pump".[127] Burke also associated republican principles with alchemy and insubstantial air, mocking the scientific work done by both Priestley and French chemists. He made much in his later writings of the connections between "Gunpowder Joe", science, and Lavoisier—who was improving gunpowder for the French in their war against Britain.[128] Paradoxically, a secular statesman, Burke, argued against science and maintained that religion should be the basis of civil society, whereas a Dissenting minister, Priestley, argued that religion could not provide the basis for civil society and should be restricted to one's private life.[129]

Birmingham Riots of 1791

Main article: Priestley Riots; see also: Wikisource:To Dr. Priestley. Dec. 29, 1792
Burning three-story house, surrounded by a mob. People are throwing things out of the windows and belongings are scattered on the street.
The attack on Priestley's home, Fairhill, Sparkbrook, Birmingham

The animus that had been building against Dissenters and supporters of the American and French Revolutions exploded in July 1791. Priestley and several other Dissenters had arranged to have a celebratory dinner on the anniversary of the storming of the Bastille, a provocative action in a country where many disapproved of the French Revolution and feared that it might spread to Britain. Amid fears of violence, Priestley was convinced by his friends not to attend. Rioters gathered outside the hotel during the banquet and attacked the attendees as they left. The rioters moved on to the New Meeting and Old Meeting churches—and burned both to the ground. Priestley and his wife fled from their home; although their son William and others stayed behind to protect their property, the mob overcame them and torched Priestley's house "Fairhill" at Sparkbrook, destroying his valuable laboratory and all of the family's belongings. Other Dissenters' homes were burned in the three-day riot. Priestley spent several days hiding with friends until he was able to travel safely to London. The carefully executed attacks of the "mob" and the farcical trials of only a handful of the "leaders" convinced many at the time—and modern historians later—that the attacks were planned and condoned by local Birmingham magistrates. When George III was eventually forced to send troops to the area, he said: "I cannot but feel better pleased that Priestley is the sufferer for the doctrines he and his party have instilled, and that the people see them in their true light."[130]

Hackney (1791–94)

... Lo! Priestley there, patriot, and saint, and sage,
Him, full of years, from his loved native land
Statesmen blood-stained and priests idolatrous
By dark lies maddening the blind multitude
Drove with vain hate ....[131]

From "Religious Musings" (1796)

by Samuel Taylor Coleridge

Unable to return to Birmingham, the Priestleys eventually settled in Lower Clapton, a district in Hackney, Middlesex[132] where he gave a series of lectures on history and natural philosophy at the Dissenting academy, the New College at Hackney. Friends helped the couple rebuild their lives, contributing money, books, and laboratory equipment. Priestley tried to obtain restitution from the government for the destruction of his Birmingham property, but he was never fully reimbursed.[133] He also published An Appeal to the Public on the Subject of the Riots in Birmingham (1791),[134] which indicted the people of Birmingham for allowing the riots to occur and for "violating the principles of English government".[135]

The couple's friends urged them to leave Britain and emigrate to either France or the new United States, even though Priestley had received an appointment to preach for the Gravel Pit Meeting congregation.[136] Priestley was minister between 1793 and 1794 and the sermons he preached there, particularly the two Fast Sermons, reflect his growing millenarianism, his belief that the end of the world was fast approaching. After comparing Biblical prophecies to recent history, Priestley concluded that the French Revolution was a harbinger of the Second Coming of Christ. Priestley's works had always had a millennial cast, but after the beginning of the French Revolution, this strain increased.[137] He wrote to a younger friend that while he himself would not see the Second Coming, his friend "may probably live to see it ... It cannot, I think be more than twenty years [away]."[138]

Daily life became more difficult for the family: Priestley was burned in effigy along with Thomas Paine; vicious political cartoons continued to be published about him; letters were sent to him from across the country, comparing him to the devil and Guy Fawkes; tradespeople feared the family's business; and Priestley's Royal Academy friends distanced themselves. As the penalties became harsher for those who spoke out against the government, and despite his being elected to the French National Convention by three separate departments in 1792, Priestley decided to move with his family to America. Five weeks after Priestley left, William Pitt's administration began arresting radicals for seditious libel, resulting in the famous 1794 Treason Trials.[139]

Pennsylvania (1794–1804)

Half-length portrait of an elderly man with wispy brown hair. He is wearing a black jacket and a white shirt.
Priestley, painted late in life by Rembrandt Peale (c. 1800);[140] Americans knew Priestley less as a man of science and more as a defender of the freedom of the colonies and of Dissenters.[141]
See also: Joseph Priestley House

The Priestleys arrived in New York City in 1794, where they were immediately fêted by various political factions vying to gain Priestley's endorsement. Priestley declined their entreaties, hoping to avoid political discord in his new country. As the couple traveled to their new home in Northumberland, Pennsylvania, they stopped in Philadelphia, where Priestley gave a series of sermons and helped found the First Unitarian Church of Philadelphia. Priestley turned down an opportunity to teach chemistry at the University of Pennsylvania, and the couple began building a home in the countryside.[142]

Priestley's attempts to avoid political controversy in the United States failed. In 1795, William Cobbett published Observations on the Emigration of Dr. Joseph Priestley, which accused him of treason against Britain and attempted to undermine his scientific credibility. His political fortunes took an even worse turn when Cobbett obtained a set of letters sent to Priestley by the radical printer John Hurford Stone and the liberal novelist Helen Maria Williams, who were both living in revolutionary France. Cobbett published the letters in his newspaper, asserting that Priestley and his friends were fomenting a revolution.[143] Priestley was eventually forced to defend himself in print.[144]

Family matters also made Priestley's time in America difficult. His son Henry died in 1795, probably of malaria. Mary Priestley died soon after in 1796; she was already ill and never fully recovered after the shock of her son's death.[145] After his wife's death, Priestley wrote to a friend: "I feel quite unhinged and incapable of the exertions I used to make. Having been always very domestic, reading and writing with my wife sitting near me, and often reading to her, I miss her everywhere."[146] Priestley's family relations deteriorated even further in 1800 when a local Pennsylvania newspaper published an article accusing William Priestley, intoxicated with "French principles", of trying to poison the entire Priestley family—both father and son vigorously denied the story.[147]

Photograph of a two-story, white clapboard house
The Priestleys' rural Pennsylvania home never became the center of a utopian community, as the expected emigrants could not afford the journey.[148]

Priestley continued the educational projects that had always been important to him, helping to establish the "Northumberland Academy" and donating his library to the fledging institution. He exchanged letters regarding the proper structure of a university with Thomas Jefferson, who used this advice when founding the University of Virginia. Jefferson and Priestley became close, and when he had completed his General History of the Christian Church,[149] he dedicated it to President Jefferson, writing that "it is now only that I can say I see nothing to fear from the hand of power, the government under which I live being for the first time truly favourable to me."[150]

Priestley tried to continue his scientific investigations in America with the support of the American Philosophical Association. He was hampered by lack of news from Europe; unaware of the latest scientific developments, Priestley was no longer on the forefront of discovery. Although the majority of his publications focused on defending phlogiston theory, he also did some original work on spontaneous generation and dreams. Despite Priestley's reduced scientific output, his presence stimulated American interest in chemistry.[151]

By 1801, Priestley had become so ill that he could no longer write or experiment. He died on the morning of 6 February 1804[152] and was buried at Riverview Cemetery in Northumberland, Pennsylvania.[153] Priestley's epitaph reads:

Return unto thy rest, O my soul, for the
Lord hath dealt bountifully with thee.
I will lay me down in peace and sleep till
I awake in the morning of the resurrection.[154]

Legacy

Photograph of a gold medal, which says "Joseph Priestley" around the edge and has a profile of a man stamped in the center
To commemorate Priestley's scientific achievements, the American Chemical Society named its highest honor the Priestley Medal in 1922.[155]

By the time he died in 1804, Priestley had been made a member of every major scientific society in the Western world and he had discovered numerous substances.[156] The 19th-century French naturalist George Cuvier, in his eulogy of Priestley, praised his discoveries while at the same time lamenting his refusal to abandon phlogiston theory, calling him "the father of modern chemistry [who] never acknowledged his daughter".[157] Priestley published more than 150 works on topics ranging from political philosophy to education to theology to natural philosophy.[158] He led and inspired British radicals during the 1790s, paved the way for utilitarianism,[159] and helped found Unitarianism.[160] A wide variety of philosophers, scientists, and poets became associationists as a result of his redaction of David Hartley's Observations on Man, including Erasmus Darwin, Coleridge, William Wordsworth, John Stuart Mill, Alexander Bain, and Herbert Spencer.[161] Immanuel Kant praised Priestley in his Critique of Pure Reason (1781), writing that he "knew how to combine his paradoxical teaching with the interests of religion".[4] Indeed, it was Priestley's aim to "put the most 'advanced' Enlightenment ideas into the service of a rationalized though heterodox Christianity, under the guidance of the basic principles of scientific method".[159]

Considering the extent of Priestley's influence, relatively little scholarship has been devoted to him. In the early 20th century, Priestley was most often described as a conservative and dogmatic scientist who was nevertheless a political and religious reformer.[162] In a historiographic review essay, historian of science Simon Schaffer describes the two dominant portraits of Priestley: the first depicts him as "a playful innocent" who stumbled across his discoveries; the second portrays him as innocent as well as "warped" for not understanding their implications better. Assessing Priestley's works as a totality has been difficult for scholars because of his wide-ranging interests. His scientific discoveries have usually been divorced from his theological and metaphysical publications to make an analysis of his life and writings easier, but this approach has been challenged recently by scholars such as John McEvoy and Robert Schofield. Although early Priestley scholarship claimed that his theological and metaphysical works were "distractions" and "obstacles" to his scientific work, scholarship published in the 1960s, 1970s, and 1980s maintained that Priestley's works constituted a unified theory. However, as Schaffer explains, no convincing synthesis of his work has yet been expounded.[163] More recently, in 2001, historian of science Dan Eshet has argued that efforts to create a "synoptic view" have resulted only in a rationalization of the contradictions in Priestley's thought, because they have been "organized around philosophical categories" and have "separate[d] the producers of scientific ideas from any social conflict".[164]

Priestley has been remembered by the towns in which he served as a reforming educator and minister and by the scientific organizations he influenced. Two educational institutions have been named in his honor—Priestley College in Warrington and Joseph Priestley College in Leeds[165] (now part of Leeds City College) —and an asteroid, 5577 Priestley, discovered in 1986 by Duncan Waldron.[166] In Birstall, the Leeds City Square, and in Birmingham, he is memorialized through statues,[167] and plaques commemorating him have been posted in Birmingham and Warrington.[168] Also, since 1952 Dickinson College has presented the Priestley Award to a scientist who makes "discoveries which contribute to the welfare of mankind".[169] The main undergraduate chemistry laboratories at the University of Leeds were refurbished as part of a £4m refurbishment plan in 2006 and renamed as the Priestley Laboratories in his honor as a prominent chemist from Leeds.[170]

Selected works

Main article: List of works by Joseph Priestley
Statue of a man with a mortar and pestle in his left hand and his right-hand upraised.
Statue of Joseph Priestley in Chamberlain Square, Birmingham

See also

Notes

  1. ^ McLachlan (1983), 28–30.
  2. ^ Kuhn, 53–60; Schofield (2004), 112–13. The difficulty in precisely defining the time and place of the "discovery" of oxygen, within the context of the developing chemical revolution, is one of Thomas Kuhn's central illustrations of the gradual nature of paradigm shifts in The Structure of Scientific Revolutions.
  3. ^ Tapper, 10.
  4. ^ a b c d e Tapper, 314.
  5. ^ Schofield (1997), 2.
  6. ^ a b Oxford Dictionary of National Biography (online ed.). Oxford University Press. {{cite encyclopedia}}: Missing or empty |title= (help) (Subscription or UK public library membership required.)
  7. ^ Schofield (1997), 2–12; Uglow, 72; Jackson, 19–25; Gibbs, 1–4; Thorpe, 1–11; Holt, 1–6.
  8. ^ Schofield (1997), 1, 7–8; Jackson, 25–30; Gibbs, 4; Priestley, Autobiography, 71–73, 123.
  9. ^ Schofield (1997), 14, 28–29; Uglow, 72; Gibbs, 5; Thorpe, 11–12; Holt, 7–9.
  10. ^ Schofield (1997), 28–29; Jackson, 30; Gibbs, 5.
  11. ^ McEvoy (1983), 48–49.
  12. ^ Qtd. in Jackson, 33. See Schofield (1997), 40–57; Uglow, 73–74; Jackson, 30–34; Gibbs, 5–10; Thorpe, 17–22; Tapper, 314; Holt, 11–14; Garrett, 54.
  13. ^ Schofield (1997), 62–69.
  14. ^ Schofield (1997), 62–69; Jackson, 44–47; Gibbs, 10–11; Thorpe, 22–29; Holt, 15–19.
  15. ^ Priestley, Joseph. The Rudiments of English Grammar; adapted to the use of schools. With observations on style. London: Printed for R. Griffiths, 1761.
  16. ^ Qtd. in Schofield (1997), 79.
  17. ^ Schofield (1997), 77–79, 83–85; Uglow, 72; Jackson 49–52; Gibbs, 13–16; Thorpe, 30–32; Holt, 19–23.
  18. ^ McLachlan, Iconography, 24–26.
  19. ^ Priestley, Autobiography, 87.
  20. ^ See Thorpe, 33–44 for a description of life at Warrington; Schofield (1997), 89–90, 93–94; Jackson, 54–58; Uglow, 73–75; Thorpe, 47–50; Holt, 27–28.
  21. ^ Sheps, 135, 149; Holt, 29–30.
  22. ^ Qtd. in Sheps, 146.
  23. ^ Priestley, Joseph. Essay on a Course of Liberal Education for Civil and Active Life. London: Printed for C. Henderson under the Royal Exchange; T. Becket and De Hondt in the Strand; and by J. Johnson and Davenport, in Pater-Noster-Row, 1765.
  24. ^ Thorpe, 52–54; Schofield (1997), 124–25; Watts, 89, 95–97; Sheps, 136.
  25. ^ Schofield (1997), 121; see also Watts, 92.
  26. ^ Schofield (2004), 254–59; McLachlan (1987–90), 255–58; Sheps, 138, 141; Kramnick, 12; Holt, 29–33.
  27. ^ Priestley, Joseph. A Chart of Biography. London: J. Johnson, St. Paul's Church Yard, 1765 and Joseph Priestley, A Description of a Chart of Biography. Warrington: Printed by William Eyres, 1765 and Joseph Priestley, A New Chart of History. London: Engraved and published for J. Johnson, 1769; A Description of a New Chart of History. London: Printed for J. Johnson, 1770.
  28. ^ Rosenberg, 57–65 and ff.
  29. ^ Gibbs, 37; Schofield (1997), 118–19.
  30. ^ Schofield (1997), 136–37; Jackson, 57–61.
  31. ^ Schofield (1997), 141–42, 152; Jackson, 64; Uglow 75–77; Thorpe, 61–65.
  32. ^ Schofield (1997), 143–44; Jackson, 65–66; see Schofield (1997), 152 and 231–32 for an analysis of the different editions.
  33. ^ Priestley, Joseph. The History and Present State of Electricity, with original experiments. London: Printed for J. Dodsley, J. Johnson and T. Cadell, 1767.
  34. ^ a b Schofield (1997), 144–56.
  35. ^ Schofield (1997), 156–57; Gibbs 28–31; see also Thorpe, 64.
  36. ^ Other early investigators who suspected that the electrical force diminished with distance as the gravitational force did (i.e., as the inverse square of the distance) included Daniel Bernoulli (see: Abel Socin (1760) Acta Helvetia, vol. 4, pages 224-225.) and Alessandro Volta, both of whom measured the force between plates of a capacitor, and Aepinus. See: J.L. Heilbron, Electricity in the 17th and 18th Centuries: A Study of Early Modern Physics (Los Angeles, California: University of California Press, 1979), pages 460-462, and 464 (including footnote 44).
  37. ^ Joseph Priestley, The History and Present State of Electricity, with Original Experiments (London, England: 1767), page 732:

    May we not infer from this experiment, that the attraction of electricity is subject to the same laws with that of gravitation, and is therefore according to the squares of the distances; since it is easily demonstrated, that were the earth in the form of a shell, a body in the inside of it would not be attracted to one side more than another?
  38. ^ Priestley, Joseph. A Familiar Introduction to the Study of Electricity. London: Printed for J. Dodsley; T. Cadell; and J. Johnson, 1768.
  39. ^ Schofield (1997), 228–30.
  40. ^ Schofield (1997), 162–64.
  41. ^ Priestley, Autobiography, 98; see also Schofield (1997), 163.
  42. ^ Schofield (1997), 162, note 7.
  43. ^ Schofield, (1997), 158, 164; Gibbs, 37; Uglow, 170.
  44. ^ Schofield (1997), 165–69; Holt, 42–43.
  45. ^ Schofield (1997), 170–71; Gibbs, 37; Watts, 93–94; Holt, 44.
  46. ^ Priestley. Institutes of Natural and Revealed Religion. London: Printed for J. Johnson, Vol. I, 1772, Vol. II, 1773, Vol. III, 1774.
  47. ^ Miller, xvi; Schofield (1997), 172.
  48. ^ Schofield (1997), 174; Uglow, 169; Tapper, 315; Holt, 44.
  49. ^ Qtd. in Jackson, 102.
  50. ^ McLachlan (1987–90), 261; Gibbs, 38; Jackson, 102; Uglow, 169.
  51. ^ a b Schofield (1997), 181.
  52. ^ See Schofield (1997), 181–88 for analysis of these two controversies.
  53. ^ See Schofield (1997), 193–201 for an analysis of the journal; Uglow, 169; Holt, 53–55.
  54. ^ See Schofield (2004), 202–7 for an analysis of Priestley's contributions.
  55. ^ Schofield (1997), 207.
  56. ^ Schofield (1997), 202–05; Holt, 56–64.
  57. ^ Priestley, Joseph. Essay on the First Principles of Government; and on the nature of political, civil, and religious liberty. London: Printed for J. Dodsley; T. Cadell; and J. Johnson, 1768.
  58. ^ Gibbs, 39–43; Uglow, 169; Garrett, 17; Tapper, 315; Holt, 34–37; Philip (1985); Miller, xiv.
  59. ^ Priestley, Joseph. Remarks on some paragraphs in the fourth volume of Dr. Blackstone’s Commentaries on the laws of England, relating to the Dissenters. London: Printed for J. Johnson and J. Payne, 1769.
  60. ^ Schofield (1997), 214–16; Gibbs, 43; Holt, 48–49.
  61. ^ Qtd. in Kramnick, 8.
  62. ^ Schofield (1997), 227, 232–38; see also Gibbs, 47; Kramnick, 9–10.
  63. ^ Priestley, Joseph. Proposals for printing by subscription, The history and present state of discoveries relating to vision, light, and colours. Leeds: n.p., 1771.
  64. ^ Schofield (1997), 240–49; Gibbs, 50–55; Uglow, 134.
  65. ^ Priestley, Joseph. Directions for impregnating water with fixed air; in order to communicate to it the peculiar spirit and virtues of Pyrmont water, and other mineral waters of a similar nature. London: Printed for J. Johnson, 1772.
  66. ^ Schofield (1997), 256–57; Gibbs, 57–59; Thorpe, 76–79; Uglow, 134–36; 232–34.
  67. ^ Schofield (1997), 251–55; see Holt, 64; Gibbs, 55–56; and Thorpe, 80–81, for the traditional account of this story.
  68. ^ Schofield (1997), 270–71; Jackson, 120–22; Gibbs, 84–86: Uglow, 239–40; Holt, 64–65.
  69. ^ McLachlan, Iconography, 19–20.
  70. ^ Qtd. in Gibbs, 91.
  71. ^ Schofield (2004), 4–11; 406; Gibbs, 91–94; Jackson, 122, 124, 143–52, 158–62; Thorpe, 80–85; Watts, 96; Holt, 70–94 (includes large quotations from Priestley's letters sent from Europe to Shelburne's sons).
  72. ^ Schofield (2004), 72.
  73. ^ McEvoy and McGuire, 326–27; Tapper, 316.
  74. ^ Schofield (2004), 59–76; Gibbs, 99–100; Holt, 112–24; McEvoy and McGuire, 333–34.
  75. ^ Tapper, 320; Priestley, Autobiography, 111; Schofield (2004), 37–42; Holt, 93–94; 139–42.
  76. ^ Schofield (2004), 77–91; Garrett, 55; Tapper, 319; Sheps, 138; McEvoy (1983), 50; McEvoy and McGuire, 338–40.
  77. ^ Sheps, 138.
  78. ^ McEvoy and McGuire, 341–45.
  79. ^ Leibniz, Gottfried Wilhelm. Confessio Philosphi: Papers Concerning the Problem of Evil, 1671–1678. Trans. Robert C. Sleigh, Jr. New Haven: Yale University Press (2004), xxxviii, 109. ISBN 9780300089585. The original Latin text and an English translation of Leibniz's A Philosopher's Creed can be found on the Latin and English Wikisources, respectively.
  80. ^ Stewart, Matthew. The Courtier and the Heretic: Leibniz, Spinoza, and the Fate of God in the Modern World. New York: W. W. Norton (2006), 171. ISBN 0393058980.
  81. ^ McEvoy and McGuire, 341.
  82. ^ Adams, Robert Merrihew. Leibniz: Determinist, Theist, Idealist. New York: Oxford University Press (1998), 10–13, 1–20, 41–44. ISBN 0195084608.
  83. ^ Rutherford, 213–18.
  84. ^ Rutherford, 46.
  85. ^ Schofield (2004), 78–79.
  86. ^ Rutherford, 12–15, 22–45, 49–54.
  87. ^ Priestley, Joseph. Letter to a Layman, on the Subject of the Rev. Mr. Lindsey's Proposal for a Reformed English Church. London: Printed for J. Wilkie, 1774.
  88. ^ Schofield (2004), 26–28; Jackson, 124; Gibbs, 88–89; Holt, 56–64.
  89. ^ Schofield (2004), 225, 236–38.
  90. ^ Priestley, Joseph. Experiments and Observations on Different Kinds of Air. 3 vols. London W. Bowyer and J. Nichols, 1774–77. There are several different editions of these volumes, each important.
  91. ^ See Gibbs 67–83 for a description of all of Priestley's experiments during this time; Thorpe, 170ff.
  92. ^ Thorpe, 167–68; Schofield (2004), 98–101.
  93. ^ Schaffer, 152.
  94. ^ Qtd. in Kramnick, 11–12; see also Schofield (2004), 121–24.
  95. ^ Fruton, 20, 29
  96. ^ Schofield (2004), 98; Thorpe, 171.
  97. ^ Schofield (1997), 259–69; Jackson, 110–14; Thorpe, 76–77, 178–79; Uglow, 229–39.
  98. ^ Schofield (2004), 93–105; Uglow, 240–41; see Gibbs 105–16 for a description of these experiments.
  99. ^ Priestley, Joseph. "An Account of Further Discoveries in Air". Philosophical Transactions 65 (1775): 384–94.
  100. ^ Qtd. in Schofield (2004), 107.
  101. ^ Schofield (2004), 105–19; see also Jackson, 126–27, 163–64, 166–74; Gibbs, 118–23; Uglow, 229–31, 241; Holt, 93.
  102. ^ Kuhn, 53–55.
  103. ^ Schofield (2004), 129–30; Gibbs, 124–25.
  104. ^ Schofield (2004), 141–43; see also Jackson, 198–99; Holt, 81–82.
  105. ^ Schofield (2004), 147–50, 196–99, 242–46. Gibbs, 134–40, 169; Uglow, 310–20, 407; Jackson, 227–28; Holt, 132–33.
  106. ^ Schofield (2004), 151–52; for an analysis of Priestley's contributions to each man's work, see Schofield's chapter "Science and the Lunar Society"; see also Jackson, 200–01; Gibbs, 141–47; Thorpe, 93–102; Holt, 127–32; Uglow, 349–50; for a history of the Lunar Society, see Uglow.
  107. ^ Qtd. in Schofield (2004), 167
  108. ^ Schofield (2004), 168; see also Jackson 203–08; Gibbs, 154–61; Uglow, 358–61.
  109. ^ Thorpe, 210; see also Schofield (2004), 169–94; Jackson 216–24.
  110. ^ Schaffer, 164; Uglow, 356; McEvoy (1983), 56–57; Donovan, 175–76, 180–81.
  111. ^ See Schaffer, 162–70 for a historiographical analysis.
  112. ^ Schofield (2004), 194.
  113. ^ McEvoy (1983), 51ff.
  114. ^ McEvoy (1983), 57; see also McEvoy and MeGuire 395ff.
  115. ^ Qtd. in Thorpe, 213.
  116. ^ Priestley, Joseph. An History of the Corruptions of Christianity. 2 vols. Birmingham: Printed by Piercy and Jones; London: Printed for J. Johnson, 1782.
  117. ^ Schofield (2004), 216.
  118. ^ Qtd. in Gibbs, 249.
  119. ^ Schofield (2004), 216–23; Thorpe, 106–08; Holt, 133–39; Philip (1985).
  120. ^ Priestley, Joseph. The importance and extent of free inquiry in matters of religion: a sermon, preached before the congregations of the Old and New Meeting of Protestant Dissenters at Birmingham. November 5, 1785. To which are added, reflections on the present state of free inquiry in this country. Birmingham: Printed by M. Swinney; for J. Johnson, London, 1785.
  121. ^ Qtd. in Gibbs, 173.
  122. ^ Gibbs, 169–76; Uglow, 408.
  123. ^ Gibbs, 176–83.
  124. ^ Priestley, Joseph. A letter to the Right Honourable William Pitt, ... on the subjects of toleration and church establishments; occasioned by his speech against the repeal of the Test and Corporation Acts, on Wednesday the 28th of March, 1787. London: Printed for J. Johnson and J. Debrett, 1787.
  125. ^ Priestley, Joseph. Letters to the Right Honourable Edmund Burke, occasioned by his Reflections on the Revolution in France, &c. Birmingham: Printed by Thomas Pearson; sold by J. Johnson, London, 1791.
  126. ^ Schofield (2004), 269–81; Thorpe, 122–25; Uglow, 409, 435–38; Holt, 142ff; Philip (1985).
  127. ^ Qtd. in Crossland, 294.
  128. ^ Crossland, 283–87, 305.
  129. ^ Kramnick, 22.
  130. ^ Qtd. in Gibbs, 204; Schofield (2004), 264, 285, 289; Thorpe, 122–44; Uglow, 440–46; Jackson, 248–60; Rose, 68–88; Holt, 154ff.
  131. ^ Coleridge, Samuel Taylor. "Religious Musings: A Desultory Poem, Written on the Christmas Eve of 1794". Retrieved 2010-01-01.
  132. ^ Joseph Priestley at hackney.gov.uk
  133. ^ Schaffer, 160; Schofield (2004), 298–99; Thorpe, 145–46; Uglow, 446–49; Jackson, 300–05.
  134. ^ Priestley, Joseph. An Appeal to the Public on the Subject of the Riots in Birmingham. To which are added, strictures on a pamphlet, entitled ’Thoughts on the late riot at Birmingham.’ Birmingham: Printed by J. Thompson; sold by J. Johnson, London, 1791.
  135. ^ Qtd. in Schofield (2004), 295.
  136. ^ A blue plaque marks the site of the Gravel Pit Meeting at Ram Place and a brown plaque the site of the Priestleys' house at 113, Lower Clapton Road: Joseph Priestley at hackney.gov.uk
  137. ^ Garrett, 53, 57, 61.
  138. ^ Qtd. in Garrett, 62.
  139. ^ Gibbs, 207–22; Schofield (2004), 304–18; Thorpe, 145–55; Uglow, 446–49, 453–54; Jackson, 300–05; Holt, 177–78.
  140. ^ McLachlan (1983), 34.
  141. ^ Schofield (2004), 326.
  142. ^ Schofield (2004), 324–32; Thorpe, 155–57; Jackson, 310–14; Holt, 179ff.
  143. ^ Schofield (2004), 329–38; Gibbs, 234–37; Jackson, 317–18; Garrett, 63; Holt, 199–204.
  144. ^ Priestley, Joseph. Letters to the inhabitants of Northumberland and its neighbourhood, on subjects interesting to the author, and to them. Parts I & II. Northumberland [Pa.]: Printed for the author by Andrew Kennedy, 1799.
  145. ^ Schofield (2004), 348.
  146. ^ Qtd. in Schofield (2004), 349.
  147. ^ Gibbs, 240; Schofield (2004), 405–06; Jackson, 314–15, 319–21.
  148. ^ Schofield (2004), 329–30.
  149. ^ Priestley, Joseph. A General History of the Christian Church. Northumberland: Printed for the author by Andrew Kennedy, 1803.
  150. ^ Qtd. in Schofield (2004), 339–43.
  151. ^ Schofield (2004), 352–72; Gibbs, 244–46.
  152. ^ Schofield (2004), 400–01; Gibbs, 247–48; Thorpe, 162–65; Jackson, 324–25; Holt, 213–16.
  153. ^ For the original marker, see "Edgar Fahs Smith Collection". Retrieved 2006-11-17. See also page 153 of Walker, William H. (1927). "History of the Priestley house and the movement for its preservation". Journal of Chemical Education. 4 (2): 150–158. doi:10.1021/ed004p150. For Priestley's modern marker see "Joseph Priestley (1733–1804)". Retrieved 2008-11-26.
  154. ^ Qtd. in Schofield (2004), 401.
  155. ^ Schofield (2004), 372.
  156. ^ Schofield (2004), 151–52.
  157. ^ Qtd. in McLachlan (1987–90), 259–60.
  158. ^ Thorpe, 74; Kramnick, 4.
  159. ^ a b Tapper, 322.
  160. ^ Schofield (2004), 3.
  161. ^ Schofield (2004), 52–57; Holt, 111–12.
  162. ^ McEvoy (1983), 47.
  163. ^ Schaffer, 154–57.
  164. ^ Eshet, 131.
  165. ^ "Joseph Priestley College". Joseph Priestley College. Archived from the original on 2007-11-14. Retrieved 2010-01-01.
  166. ^ Schmadel, Lutz D. Dictionary of Minor Planet Names. 5th ed. Berlin and New York: Springer (2003), 474.
  167. ^ The statue in Birmingham is a 1951 recast, in bronze, of a white marble original by A. W. Williamson, unveiled in 1874.
  168. ^ The Lunar Society Moonstones honor Priestley in Birmingham. There are Blue Plaques commemorating him on the side of the Church of St. Michael and St. Joseph, New Meeting House Lane, Birmingham (Birmingham Civic Society Retrieved 2010-01-01), and another on the Warrington Salvation Army Citadel, once the home of Priestley (British Crystallographic Association Retrieved 2010-01-01).
  169. ^ Joseph Priestley Celebration. Dickinson College. Retrieved 2010-01-01.
  170. ^ The official opening of the Priestley Laboratories by Lord Sainsbury, 20 October 2006, University of Leeds, Retrieved 2010-01-01.

References

Primary materials

  • Lindsay, Jack, ed. Autobiography of Joseph Priestley. Teaneck: Fairleigh Dickinson University Press, 1970. ISBN 0838678310.
  • Miller, Peter N., ed. Priestley: Political Writings. Cambridge: Cambridge University Press, 1993. ISBN 0521425611.
  • Passmore, John A., ed. Priestley's Writings on Philosophy, Science and Politics. New York: Collier Books, 1964.
  • Rutt, John T., ed. Collected Theological and Miscellaneous Works of Joseph Priestley. 2 vols. London: George Smallfield, 1832.
  • Rutt, John T., ed. Life and Correspondence of Joseph Priestley. 2 vols. London: George Smallfield, 1831.
  • Schofield, Robert E., ed. A Scientific Autobiography of Joseph Priestley (1733–1804): Selected Scientific Correspondence. Cambridge: MIT Press, 1966.

Biographies

The most exhaustive biography of Priestley is Robert Schofield's recent two-volume work; several one-volume treatments exist, all somewhat older: Gibbs, Holt and Thorpe. Graham and Smith focus on Priestley's life in America and Uglow and Jackson both discuss Priestley's life in the context of other developments in science.

  • Gibbs, F. W. Joseph Priestley: Adventurer in Science and Champion of Truth. London: Thomas Nelson and Sons, 1965.
  • Graham, Jenny. Revolutionary in Exile: The Emigration of Joseph Priestley to America, 1794–1804. Transactions of the American Philosophical Society 85 (1995). ISBN 0871698528.
  • Holt, Anne. A Life of Joseph Priestley. London: Oxford University Press, 1931.
  • Jackson, Joe. A World on Fire: A Heretic, an Aristocrat and the Race to Discover Oxygen. New York: Viking, 2005. ISBN 0670034347.
  • Johnson, Steven. The Invention of Air: A Story of Science, Faith, Revolution, and the Birth of America. New York: Riverhead, 2008. ISBN 1594488525.
  • Schofield, Robert E. The Enlightenment of Joseph Priestley: A Study of his Life and Work from 1733 to 1773. University Park: Pennsylvania State University Press, 1997. ISBN 0271016620.
  • Schofield, Robert E. The Enlightened Joseph Priestley: A Study of His Life and Work from 1773 to 1804. University Park: Pennsylvania State University Press, 2004. ISBN 0271024593.
  • Smith, Edgar F. Priestley in America, 1794–1804. Philadelphia: P. Blakiston's Son and Co., 1920.
  • Tapper, Alan. "Joseph Priestley". Dictionary of Literary Biography 252: British Philosophers 1500–1799. Eds. Philip B. Dematteis and Peter S. Fosl. Detroit: Gale Group, 2002.
  • Thorpe, T. E. Joseph Priestley. London: J. M. Dent, 1906.
  • Uglow, Jenny. The Lunar Men: Five Friends Whose Curiosity Changed the World. New York: Farrar, Straus and Giroux, 2002. ISBN 0374194408.

Secondary materials

  • Anderson, R. G. W. and Christopher Lawrence. Science, Medicine and Dissent: Joseph Priestley (1733–1804). London: Wellcome Trust, 1987. ISBN 0901805289.
  • Bowers, J. D. Joseph Priestley and English Unitarianism in America. University Park: Pennsylvania State University Press, 2007. ISBN 027102951X.
  • Braithwaite, Helen. Romanticism, Publishing and Dissent: Joseph Johnson and the Cause of Liberty. New York: Palgrave Macmillan, 2003. ISBN 0-333-98394-7.
  • Conant, J. B., ed. "The Overthrow of the Phlogiston Theory: The Chemical Revolution of 1775–1789". Harvard Case Histories in Experimental Science. Cambridge: Harvard University Press, 1950.
  • Crook, R. E. A Bibliography of Joseph Priestley. London: Library Association, 1966.
  • Crossland, Maurice. "The Image of Science as a Threat: Burke versus Priestley and the 'Philosophic Revolution'". British Journal for the History of Science 20 (1987): 277–307.
  • Donovan, Arthur. Antoine Lavoisier: Science, Administration and Revolution. Cambridge: Cambridge University Press, 1996. ISBN 052156218X
  • Eshet, Dan. "Rereading Priestley". History of Science 39.2 (2001): 127–59.
  • Fitzpatrick, Martin. "Joseph Priestley and the Cause of Universal Toleration". The Price-Priestley Newsletter 1 (1977): 3–30.
  • Garrett, Clarke. "Joseph Priestley, the Millennium, and the French Revolution". Journal of the History of Ideas 34.1 (1973): 51–66.
  • Fruton, Joseph S. Methods and Styles in the Development of Chemistry. Philadelphia: American Philosophical Society, 2002. ISBN 0871692457.
  • Kramnick, Isaac. "Eighteenth-Century Science and Radical Social Theory: The Case of Joseph Priestley's Scientific Liberalism". Journal of British Studies 25 (1986): 1–30.
  • Kuhn, Thomas. The Structure of Scientific Revolutions. 3rd ed. Chicago: University of Chicago Press, 1996. ISBN 0226458083.
  • Haakonssen, Knud, ed. Enlightenment and Religion: Rational Dissent in Eighteenth-Century Britain. Cambridge: Cambridge University Press, 1996. ISBN 0521560608.
  • McCann, H. Chemistry Transformed: The Paradigmatic Shift from Phlogiston to Oxygen. Norwood: Alex Publishing, 1978. ISBN 089391004X.
  • McEvoy, John G. "Joseph Priestley, 'Aerial Philosopher': Metaphysics and Methodology in Priestley's Chemical Thought, from 1762 to 1781". Ambix 25 (1978): 1–55, 93–116, 153–75; 26 (1979): 16–30.
  • McEvoy, John G. "Enlightenment and Dissent in Science: Joseph Priestley and the Limits of Theoretical Reasoning". Enlightenment and Dissent 2 (1983): 47–68.
  • McEvoy, John G. "Priestley Responds to Lavoisier's Nomenclature: Language, Liberty, and Chemistry in the English Enlightenment". Lavoisier in European Context: Negotiating a New Language for Chemistry. Eds. Bernadette Bensaude-Vincent and Ferdinando Abbri. Canton, MA: Science History Publications, 1995. ISBN 088135189X.
  • McEvoy, John G. and J.E. McGuire. "God and Nature: Priestley's Way of Rational Dissent". Historical Studies in the Physical Sciences 6 (1975): 325–404.
  • McLachlan, John. Joseph Priestley Man of Science 1733–1804: An Iconography of a Great Yorkshireman. Braunton and Devon: Merlin Books, 1983. ISBN 0863030521.
  • McLachlan, John. "Joseph Priestley and the Study of History". Transactions of the Unitarian Historical Society 19 (1987–90): 252–63.
  • Philip, Mark. "Rational Religion and Political Radicalism". Enlightenment and Dissent 4 (1985): 35–46.
  • Rose, R. B. "The Priestley Riots of 1791". Past and Present 18 (1960): 68–88.
  • Rosenberg, Daniel. Joseph Priestley and the Graphic Invention of Modern Time. Studies in Eighteenth Century Culture 36(1) (2007): pp. 55–103.
  • Rutherford, Donald. Leibniz and the Rational Order of Nature. Cambridge: Cambridge University Press, 1995. ISBN 0521461553.
  • Schaffer, Simon. "Priestley Questions: An Historiographic Survey". History of Science 22.2 (1984): 151–83.
  • Sheps, Arthur. "Joseph Priestley's Time Charts: The Use and Teaching of History by Rational Dissent in late Eighteenth-Century England". Lumen 18 (1999): 135–54.
  • Watts, R. "Joseph Priestley and Education". Enlightenment and Dissent 2 (1983): 83–100.
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