BREIDENBAUGH, Edward Swoyer, chemist, born in Newville, Cumberland County, Pennsylvania, 13 January, 1849. He was educated at Pennsylvania College, graduating in 1868, and studied chemistry at Sheffield scientific school from 1871 till 1873, being instructor in chemistry during the latter year. From 1873 till 1874 he was professor of natural sciences at Carthage College, Illinois, but in 1874 he was elected professor of chemistry and mineralogy in Pennsylvania College, where he has since remained. During the years 1880-'4 he was mineralogist of the Pennsylvania state board of agriculture. Prof. Breidenbaugh has written numerous papers on scientific subjects, of which the more important are "Analysis of Connecticut Tobacco Ash" (1872); "The Minerals of the Tilly Foster Nine" (1873); "Fermentation and Germ Theory" (1877); "Concerning Certain Misconceptions in Considering the Relations between Science and Religion" (1880); "The Nitrogenous Element of Plant Food" (1880); and "Mineralogy on the Farm" (1881). He is also the author of "Lecture Notes on Inorganic Chemistry", (Gettysburg, 1876) and "Pennsylvania College Book" (Philadelphia, 1882).