American scientist, born in Coeymans, NY, on the 3rd of June 1821. He passed his boyhood in Saratoga, where he received an ordinary education. Later he studied medicine and chemistry, and received from the University of Vermont the degree of M.D. From 1852 to 1869 he edited instruction-books in various departments of natural science. In 1872 he established the Popular Science Monthly, a monthly published in New York City, of which he continued to be the editor and manager to the time of his death. His published volumes include Alcohol and the Constitution of Man (1854); Correlation and Conservation of Force (1864); The Culture Demanded by Modern Life (1867); and other scientific works. He died in New York City on the 18th of January 1887.—His brother, William Jay, was born at Milton, Saratoga County, NY, on the 14th of October 1838; studied chemistry under his brother, also in the laboratory of Columbia College, New York, and the Sheffield Scientific School, New Haven, CT. He afterward took a course in medicine at the University of the City of New York, where he graduated in 1865. Proceeding thence to London, he studied anatomy and physiology under Professor Huxley in the Jermyn Street School of Mines, after which, returning to America, he practiced medicine in Minnesota for a number of years. He assisted his brother in editing the Popular Science Monthly (1872–87), after which he was sole editor. He published Pioneers of Science in America (1895); edited Huxley’s Lessons in Elementary Physiology; and revised E. L. Youmans’s Class-Book of Chemistry (1889). He died in 1901.
