He was born in
Easton, Massachusetts, July 22, 1826. He graduated at
New York University 1848; became a pupil of
Asa Gray at the Cambridge botanical garden; graduated at the
Lawrence Scientific School at
Harvard 1854; assistant to
Louis Agassiz till 1863, and also for three years adjunct Professor of Zoology at the Lawrence Scientific School; Professor of Natural Sciences in
Pennsylvania State College, near Bellefonte, 1866–69; Professor of Natural History in
University of Kentucky, Lexington, 1869–72; Professor of Veterinary Science in
Massachusetts Agricultural College, Amherst, from 1872 until his death there July 1, 1873. He contributed to the
Smithsonian publications, to the Proceedings of the
American Academy of Arts and Sciences, and to other learned periodicals. Author of
Mind in Nature (Cambridge, 1863) and of the
Mode of Development of Animals (New York, 1865). See
A. S. Packard, Jr.'s Memoir in
Biographical Memoirs of the National Academy of Sciences (Washington, 1877). In later life, he used the
double-barrelled surname James-Clark. ==References==