ERDMANN  , OTTO• LINNE (1804-1869),

German chemist, son of Karl Gottfried Erdmann (1774-1835), the physician who introduced vaccination into Saxony, was born at Dresden on the 1th of April _1804 . In 182o he began to attend the medicochirurgical academy of his native place, and in 1822 he entered the university of Leipzig where in 1827 he became extraordinary professor, and in 183o ordinary professor of chemistry . This office he held until his death, which happened at Leipzig on the 9th of October 1869 . He was particularly successful as a teacher, and the laboratory established at Leipzig under his direction in 1843 was long regarded as a model institution . As an investigator he is best known for his work on nickel and indigo and other dye-stuffs . With R . F . Marchand (1813-185o) he also carried out a number of determinations of atomic weights . In 1828, in conjunction with A . F . G . Werther (1815-1869), he founded the Journal fur technische and okonomische Chemie, which became in 1834 the Journal fur praktische Chemie .

He was also the author of Uber das Nickel (1827), Lehrbuch der Chemie (1828), Grundriss der Waarenkunde (1833), and Uber das Studium der Chemie (1861) .