LEFFMANN, Henry, 'American chemist: b. Philadelphia, 9 Sept. 1847. He was gradu-. ated fromJefferson. Medical College in 18W. and from the Pennsylvania College of Dental. Surgery in 1884. He was elected assistant professor of chemistry at the Philadelphia Cen- • tral High School and served from 1876 to 1880. He was 'Port physician 1884-87, and 1891-92, and in 1888 was appointed but not confirmed, coiner United States Mint,' political reasons interfering.' After 1888 he was professolr of . chemistry. • at the Women's 'Medical College of Pennsylvania and professor of chemistry' at the Wagner Free' Institute of Science. Among his works are 'First StepS in Chemical Prin ciples) ; 'Conipend of Organic Chemistry' •, 'Compend OF Chemistry) • 'Analysis of 'Milk and Water 'Sanitary of Coal -Tar Products) (from the German),;" 'Structural Formulas Dar the. Use of 'Analysis of .Water),; [(Select Methods in.Food Analysis' (2d. • ed.: .19(15 ) C , Dickens (1908) ; , 'Fetish's 1;1913), He edited Reese's ;Medical''. urisprudence and Toxicology> (4th 'and. StthLeds.),.. and (Allen's Commercial; OtOttic Analysie (Ma's. I and II, 3d ed.).
LEFORT, 1*-fde, Francois JacqUes, sian admiral and statesman: b. Geneva, 1653,
or 1656; d. Moscow, 2/12 March 1699. He was of Scottish descent, was. educated at Geneva, and after service with the French and Dutch navies he joined the Russian army in 1675. He served in the wars against the Turks and Tatars and afterward became a sort of mili tary monitor to the future Peter the Great. He was a close supporter and adviser of Peter in the struggle against his sister, Sophie, for the rulership in 1677-79 and gained the undying gratitude of the monarch. He reorganized the army with the assistance of Patrick Gor don, materially aided the realization of. Peter's project of creating a navy, and was largely instrumental in introducing Western ideals in the court of Russia. He became grand admiral and generalissimo' in 1694, and shared in the naval triumph in which Peter wrested Azof from the Turks in 1695-96. He was chief of the embassy in the expedition in which the Great traveled incognito through Europe in 1697-98. Consult Bassville, 'Précis histoire la vie de Francois Lefort). (1784) ; Posselt,' 'Der General and Admiral F. (2 vole., 1866).