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HAY, Ren-Just (1743-1822). Essai d'une thorie sur la structure des crystaux, applique plusieurs genres de substances crystallises. Paris: Chez Gogu & Ne de la Rochelle, 1784.
8o (212 x 140 mm). Lacking the 8 folding engraved plates. Original marbled wrappers, uncut.
Provenance: MICHEL ADANSON (1727-1806), scientist and botanical taxonomist (presentation note from the author mounted inside front wrapper which reads: "Hay prie Monsieur Adanson de vouloir bien agrer ce gage de son respect et de sa reconnoissance pour l'intert qu'il veut bien prendre son travail"; Adanson's signature and notation "collation Adanson 1785," his underlinings and marginalia throughout); E.D (stamp on title-page); John Burke, historian of crystallography (see Norman).
FIRST EDITION. PRESENTATION COPY TO THE SCIENTIST MICHEL ADANSON OF HIS FOUNDATION WORK ON THE MATHEMATICAL THEORY OF CRYSTAL STRUCTURE. Hay undertook botanical studies at the Collge de Navarre in Paris before attending Daubenton's lectures on mineralogy at the Jardin du Roi, when his interest soon turned to mineralogy. His first publications were favorably reviewed by Daubenton and Bezout and led to his election as an associate member of the botanical class of the Academy in 1783.
Published in 1784, Hay's Essai d'une thorie sur la structure des crystaux, laid the foundation of the mathematical theory of crystal structure. Hay proposed six types of primary crystal forms in this work and agrued that the primitive form or "nucleus" was a mathematical concept rather than a physical reality. He proposed the theory of the crystal molecule, and recognized varieties of a crystal species are limited--the discontinuity principle. He derived secondary forms theoretically by stacking layers of molecules on the faces of the nucleus, enunciating the laws of decretement (reduction of each successive layer) and symmetry that regulate their growth. Hay's law of decretement led his successors directly to the law of rational indices, or what is often referred to as "Hay's law."
AN IMPORTANT ASSOCIATION COPY. Burke, pp. 82-106; Dibner Heralds of Science 92; Grolier/Horblit 47; Wellcome III, p.224; Norman 1021.
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Provenance: MICHEL ADANSON (1727-1806), scientist and botanical taxonomist (presentation note from the author mounted inside front wrapper which reads: "Hay prie Monsieur Adanson de vouloir bien agrer ce gage de son respect et de sa reconnoissance pour l'intert qu'il veut bien prendre son travail"; Adanson's signature and notation "collation Adanson 1785," his underlinings and marginalia throughout); E.D (stamp on title-page); John Burke, historian of crystallography (see Norman).
FIRST EDITION. PRESENTATION COPY TO THE SCIENTIST MICHEL ADANSON OF HIS FOUNDATION WORK ON THE MATHEMATICAL THEORY OF CRYSTAL STRUCTURE. Hay undertook botanical studies at the Collge de Navarre in Paris before attending Daubenton's lectures on mineralogy at the Jardin du Roi, when his interest soon turned to mineralogy. His first publications were favorably reviewed by Daubenton and Bezout and led to his election as an associate member of the botanical class of the Academy in 1783.
Published in 1784, Hay's Essai d'une thorie sur la structure des crystaux, laid the foundation of the mathematical theory of crystal structure. Hay proposed six types of primary crystal forms in this work and agrued that the primitive form or "nucleus" was a mathematical concept rather than a physical reality. He proposed the theory of the crystal molecule, and recognized varieties of a crystal species are limited--the discontinuity principle. He derived secondary forms theoretically by stacking layers of molecules on the faces of the nucleus, enunciating the laws of decretement (reduction of each successive layer) and symmetry that regulate their growth. Hay's law of decretement led his successors directly to the law of rational indices, or what is often referred to as "Hay's law."
AN IMPORTANT ASSOCIATION COPY. Burke, pp. 82-106; Dibner Heralds of Science 92; Grolier/Horblit 47; Wellcome III, p.224; Norman 1021.