René Just Haüy
|René Just Haüy|
René Just Haüy
|Born||28 February 1743
|Died||3 June 1822
René Just Haüy (French pronunciation: [aɥi]; 28 February 1743 in Saint-Just-en-Chaussée (Oise) – 3 June 1822 in Paris) was a French mineralogist, commonly styled the Abbé Haüy after he was made an honorary canon of Notre Dame. He is often referred to as the "Father of Modern Crystallography." 
Haüy was born at Saint-Just-en-Chaussée, in the département of Oise. His parents were of a humble rank of life, and were only enabled by the kindness of friends to send their son to the College of Navarre and later to the College of Lemoine. Haüy became an ordained Roman Catholic Priest. Becoming one of the teachers at Lemoine, he began to devote his leisure hours to the study of botany, but an accident directed his attention to another field in natural history. He happened to let fall a specimen of calcareous spar which belonged to a friend; examining the fragments, he was led to make experiments which resulted in the statement of the geometrical law of crystallization associated with his name.
The value of this discovery, the mathematical theory of which is given by Haüy in his Traité de minéralogie, was immediately recognized, and when communicated to the Academy, it secured for its author a place in that society. Haüy's name is also known for the observations he made in pyroelectricity.
When the Revolution broke out, Haüy was thrown into prison; he was in danger of losing his life until Étienne Geoffroy Saint-Hilaire interceded on his behalf. In 1802, under Napoleon, he became professor of mineralogy at the National Museum of Natural History and founder of the Musée de Minéralogie. In the same year he was visited by Martin van Marum, at that time curator of both the Teylers Museum and a director of the Hollandsche Maatschappij der Wetenschappen. Van Marum bought a set of pear-wood models from Haüy for the Teylers Museum and in return Haüy became a member of Van Marum's science society. After 1814 he was deprived of his appointments by the Restoration government. His final days were consequently clouded by poverty, but the courage and high moral qualities which had helped him in his youth did not desert him in his old age; he lived cheerful and respected till his death in Paris.
The following are Haüy's principal works:
- Essai d'une théorie sur la structure des crystaux (1784) via Gallica
- Exposition raisonné de la théorie de l'électricité et du magnétisme, d'après les principes d'Æpinus (1787) BNF
- De la structure considérée comme caractère distinctif des minéraux (1793)
- Exposition abrégé de la théorie de la structure des cristaux (1793) BNF
- Extrait d'un traité élémentaire de minéralogie (1797)
- Traité de minéralogie (5 vols, 1801) BNF: Vol 1 Vol 2 Vol 3 Vol 4 Vol 5
- Traité élémentaire de physique (2 vols 1803, 1806) Google Books
- Tableau comparatif des résultats de la cristallographie, et de l'analyse chimique relativement à la classification des minéraux (1809) BNF
- Traité des pierres précieuses (1817) BNF
- Traité de cristallographie (2 vols, 1822) Google Books
He also contributed papers, of which 100 are enumerated in the Royal Society's catalogue, to various scientific journals, especially the Journal de physique and the Annales du Museum d'Histoire Naturelle.
- Brock, H. (1910). René-Just Haüy. In "The Catholic Encyclopedia". New York: Robert Appleton Company.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.
- Catholic Encyclopedia 1917
- George F. Kunz. “The Life and Work of Haüy.” American Mineralogist. Volume 3, number 6, 1918. Pages 61–89, plates 5–11; Also: Bulletin of the New York Mineralogical Club. Volume 3, pages 61–89, plates 5–11 [sic]. This was for the celebration of the 175th anniversary of the birth of the famous French mineralogist.