John Pringle Nichol
John Pringle Nichol FRSE (13 January 1804 – 19 September 1859) was a Scottish educator, phrenologist, astronomer and economist who did much to popularise astronomy in a manner that appealed to nineteenth century tastes.
Early life 
Born at Huntly-Hill, near Brechin, Angus, Nichol was the son of a gentleman farmer and was educated at the local grammar school and then at King's College, University of Aberdeen. He was licensed as a preacher and became a highly effective communicator but the impact of phrenological thinking led him to abandon the Church for education.
Nichol held a number of posts in education and journalism and corresponded with many leading thinkers of the times, including John Stuart Mill. He clearly made some impression in economics as James Mill and Nassau Senior nominated him as Jean-Baptiste Say's successor as professor of political economy at the Collège de France though he was at the time too ill to take the post.
In 1836 and in competition with Thomas Carlyle, Nichol was appointed Regius Professor of Astronomy at the University of Glasgow. He became an enthusiastic and effective lecturer and made a profound impression on William Thomson, 1st Baron Kelvin with his introduction of the "Continental" approach to mathematical physics of Jean Baptiste Joseph Fourier.
I have been revelling in Nichol's Architecture of the Heavens and Phenomena of the Solar System, and have been in imagination winging my flight from system to system, and from universe to universe ...
... almost unparalleled for the extent and accuracy of the information that it contains in a small bulk."
Private life 
In 1831 Nichol married Jane Tullis who died in 1850. Their eldest son, John Nichol became a literary critic and writer. Nichol married secondly Elizabeth Pease in 1853, a prominent reformer and member of the Darlington Pease family, much against her family's wishes.
During the late 1840s, his health declined and, stemming from his physician's prescription, Nichol became addicted to opiates. He recorded an account of his drug-addiction illness and its cure by hydrotherapy at the Ben Rhydding Hydro in his book Memorials from Ben Rhydding (1852).
- MacLehose, J. (1886) "71. John Pringle Nichol 1804–1859", in Memoirs and Portraits of One Hundred Glasgow Men Who Have Died During the Last Thirty Years, vol. 2, Glasgow: James MacLehose & Sons, pp. 249–252
- Burnett, John. "Nichol, John Pringle". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/20084. (subscription or UK public library membership required)
- Schaffer, S. (1989) "The nebular hypothesis and the science of progress", in History, Humanity and Evolution, ed. J. R. Moore, pp. 131–54
- Nichol (1852). Memorials from Ben Rhydding Concerning the Place, its People, its Cures. London: Charles Gilpin.
- Nichol, J.P. (1837) Views of the Architecture of the Heavens , Edinburgh: William Tait
- — (1838) The Phenomena and Order of the Solar System, Edinburgh: William Tait
- — (1844) Contemplations on the Solar System, Edinburgh: William Tait
- — (2006) . Thoughts on Some Important Points Relating to the System of the World. Kessinger. ISBN 1-4286-5171-3.
- — (1847) The Stellar Universe
- — (1855)The Planet Neptune: An Exposition and History, Edinburgh: James Nichol
- — Cyclopedia of the Physical Sciences
- — General Principles in Geology, the preface to Keith Johnston's Physical Atlas
- Coutts, J. (1909). A History of the University of Glasgow.
- Monthly Notices of the Royal Astronomical Society, 19 (1858–9), 141; 20 (1859–60), 131;
- The Times, 23 September 1859, 10b