Louis Bernard Guyton De Morveau, a French chemist, born in Dijon, Jan. 4, 1737, died in Paris, Jan. 2,1816. While yet a minor he was appointed deputy attorney general at the parliament of Dijon, which post he held till 1782. He devoted his leisure to scientific pursuits, and procured the establishment at the academy of Dijon in 1774 of public lectures upon various branches of natural philosophy, and himself undertook the professorship of chemistry. In conjunction with Maret and Durande, he published in 1777 Elements de chimie theorique et pratique, and also published annotated translations of several treatises of Bergman, Scheele, and Black. As early as 1773 he had used chlorine as a general disinfecting agent, and made the results of his experience known in his Traite des moyens de desinfecter l'air (1801). He suggested in 1782 the plan of a new chemical nomenclature, which was at once adopted by Lavoisier and others, who, in conjunction with him, perfected the original idea and reduced it to the shape it still retains. Meanwhile Guyton wrote the Dictionnaire de clilmie for the Ency-clopedie methodique.

In 1791 he was elected deputy to the legislative assembly, and afterward to the convention, where he voted for the death of Louis XVI. He was among the promoters of the polytechnic school, in which he was subsequently professor and director. He was administrator of the mint from 1800 to 1814, and favored the decimal system.