Appletons' Cyclopædia of American Biography/Schweinitz, Emil Alexander de
SCHWEINITZ, Emil Alexander de, chemist,
b. in Salem, N. C., 18 Jan., 1855. He is the
son of Bishop E. A. de Schweinitz of the Moravian
church, and was graduated at the University
of North Carolina in 1882. Subsequently he
became instructor in that institution, but electing
chemistry as his profession he studied at Göttingen,
where in 1886 he received the degree of Ph. D.
On his return he entered the chemical division of
the agricultural department in Washington, and
became in 1890 director of the biochemic laboratory
of the agricultural department. He is also
professor of chemistry in the Columbian university
medical school, of which faculty he is the dean.
Dr. de Schweinitz is a member of a number of
scientific societies both in this country and abroad,
and in 1896 was president of the Washington
chemical society. His scientific work has included
numerous investigations in connection with his
specialty, results of which have been published,
and the more important of which are the followlowing:
“A Chemical Study of the Osage Orange
as a Substitute for the Mulberry in rearing
Silkworms” (1889); “The Poisons produced by the
Hog Cholera Germ” (1890); “The Production of
Immunity to Swine Plague by Use of the Products
of the Germ” (1891); “The Use of Mallein and its
Active Principles” (1892); “A Preliminary Study
of the Poisons of the Tuberculosis Bacillus and
the Practical Value and Use of Tuberculin” (1892);
“Artificial Media for Bacterial Cultures” (1893);
“The Effect of Tuberculin on the Milk of Cows”
(1894); “The Chemical Composition of the
Tuberculosis and Glanders Bacilli” (1895); “A Hygienic
Study of Oleomargarine” (1896); and “The War
with the Microbes” (1897).