DEPARCIEUX, ANTOINE (often written, but erroneously, De Parcieux), an able mathematician, was born on the 18th of October 1703, at the village of Cessoux, near Nimes. His father was an humble peasant, and unable to afford him the least education; but the display of his precocious talents induced an opulent gentleman in his neighbourhood to place him in the College of Lyon, where his in his studies was rapid and striking, especially in the mathematical branches of science. After finishing his coarse in this institution he repaired to Paris, without money and without friends; but he turned his talents to account by drawing sun-dials, and engaging in other employment of this kind, by which be was able to obtain a subsistence. Ilia accuracy in these drawings being remarkable, he at length acquired en attachment to the pursuit, and obtained ample employment to secure him a comfortable livelihood. He afterwards appears to have turned his attention to machinery, and probably his talents were extensively employed in civil eugineering and other collateral subjects. He (lied September 2, 1768, aged 65.
His publications were na follows :-1, ' Tables Astronomiques; 4to, 1740; 2, Trait6 de Trigonometrics Rectiligne et Sph6rique, avec Trait6 de Gnomonique et des Tables de Logarithmes; 4to, 1741 ; 3, ' Easel ear lea Probabilith de in Dino& de la Vie Mnnino,' !to, 1746; 4, ' Itasponse aux Objections contra I'Essai' (the last work), -Ito, 1746; 5, Additions h &c., 4 to, 1760 ; 6, 'M6moires sur la Possibilit6 et la Facilit6 d'ameuer aupree d'Ilstrapade it Paris lee Eaux de Is Riviera d'Ivette; 4to,1765. Besides these separate works be published sixteen memoirs amongst those of the Paris Academy, between the years 1735 and 1768.
D6parcieux was created Royal Censor and member of the Academy of Sciences in Paris. He was also a member of the academics of Berlin, Stockholm, Metz, Lyon, and Montpellier.