IV. The Section of Biography is less complete, yet pains have been

taken to index the necrologies in several periodicals. The chief of these periodicals are Ber. d. chem. Ges.; Am. J. Sci.; Nature ; Ann. Chem., Crell ; Allg J. Chem., Scherer and Gehlen ; Chem. News ; Bull. Soc chim., Paris ; Pop. Sci. Mon., New York ; J. Chem. Soc, London. In this Section special bibliographies of individuals are placed under their names.