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RENE JUST HAUY (1743-1822)

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Originally appearing in Volume V13, Page 76 of the 1911 Encyclopedia Britannica.
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RENE JUST

HAUY (1743-1822)  , French mineralogist, commonly styled the Abbe Hauy, from being an honorary
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canon of Notre Dame, was born at St Just, in the department of
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Oise, on the 28th of
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February 1743 . His parents were in a humble rank of
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life, and were only enabled by the kindness of friends to send their son to the college of Navarre and afterwards to that of Lemoine . Becoming one of the teachers at the latter, he began to devote leisure hours to the study of botany; but an accident directed his attention to another field in natural
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history . Happening to let fall a specimen of calcareous spar belonging to a friend, he was led by examination of the fragments to make experiments which resulted in the statement of the geometrical law of crystallization associated with his name (see CRYSTALLOGRAPHY) . The value of this
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discovery, the mathematical theory of which is given by Hauy in his Traite de mineralogie, was immediately recognized, and when communicated to the Academy, it secured for its author a place in that society . Ha iiy's name is also known for the observations he made in pyro-
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electricity . When the Revolution broke out, he was thrown into prison, and his life was even in danger, when he was saved by the intercession of E . Geoffroy Saint-Hilaire . In 1802, under
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Napoleon, he became professor of
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mineralogy at the museum of natural history, but after 181.4 he was deprived of his appointments by the government of the Restoration . His latter days were consequently clouded by poverty, but the courage and high moral qualities which had helped him forward in his youth did not
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desert him in his old age; and he lived cheerful and respected till his
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death at Paris on the 3rd of
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June 1822 . The following are his
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principal
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works: Essai d'une theorie sur la structure
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des cristaux (1784); Exposition raisonnee de la theorie de l'electricite et du magnetisme, d'apres
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les principes d'Aepinus (1787); De la structure consideree comme caractere distinctif des mineraux (1793); Exposition abregee' de la theorie de la structure des cristaux (1793); Extrait d'un traite elementaire de mineralogie (1797); Traite de mineralogie (4 vols., 18oi); Traite elementaire de physique (2 vols., 1803, 'Sob); Tableau comparatif des resultats de la cristallographie, et de l'analyse chirnique relativement a la classification des mineraux (1809); Traite des pierres precieuses (1817); Traite de cristallographie (2 vols., 1822) . He also contributed papers, of which Too are enumerated in the Royal Society's catalogue, to various scientific
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journals, especially the Journal de physique and the Annals du Museum d'Histoire Naturelle .

End of Article: RENE JUST HAUY (1743-1822)
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