COCHRAN, David Henry, educator, born in Springville, New York, 5 July, 1828. He was graduated at Hamilton in 1850, and received from it the degree of LL.D. in 1869. He was professor of natural sciences at the Clinton liberal institute in 1850-'1, principal of Fredonia academy from 1852 till 1854, professor of natural sciences in the State normal school at Albany, New York, in 1854-'5, and its president from 1855 till 1864. In the last-named year he became president of the Brooklyn polytechnic institute, where he entirely reorganized the courses of study. In 1862 Prof. Cochran visited the principal educational institutions of Europe, under the direction of the executive committee of the normal school, and he has travelled widely through the mining districts of the United States and British America. He is a trustee of Hamilton College, has lectured much in New York state, and published educational and scientific reports.