Henry James Clark, B.A., B.Sc, the first professor of Natu- 

 ral History at the Massachusetts Agricultural College, was the sou 

 of Rev. Henry Porter and AbigailJackson (Ortou) Clark, and was 

 born 22d Juue, 1826, at Easton, Mass. His father removed to 

 Brooklyn, N. Y., where he lived many years and where the son 

 received much of his early training. He received his collegiate 

 education at the University of the City of New York, graduating 

 B.A., in 1848. Immediately after leaving college he taught for 

 some time at White Plains, N. Y. He commenced the study of 

 botany under Dr. Asa Gray, at Cambridge, in 1850. While a 

 student at the Botanic Garden, he taught in the academy at West- 

 field, Mass., for a single term, apparently achieving much success 

 as a teacher, and forming life-long friendships. Soon after this he 

 became a student of Professor Agassiz, and for several years was 

 his private assistant. Professor Agassiz, early in 1857, spoke of 

 him enthusiastically, remarking to a friend, ''Clark has become 

 the most accurate observer in the country." He graduated from 

 the Lawrence Scientific School, Cambridge, in 1854, taking the 

 degree of B.Sc. Between 1856 and 1863 he was associated with 

 Agassiz in the preparation of the anatomical and embiTological 

 portions of the "Contributions to the Natural History of the United 

 States." In June, 1860 he was appointed adjunct Professor of 

 Zoology in Harvard University, which he held until the expiration 

 of his term of office in 1865. He gave a course of lectures on his- 

 tology at the Museum of Comparative Zoology, Cambridge, in 

 1861, and delivered a course of twelve lectures on "Mind in 

 Nature ; or the Origin of Life, and the Mode of Development of 

 Animals," at the Lowell Institute, Boston, in 1864. He was 

 appointed Professor of Botany, Zoology, and Geology, in the 

 Agricultural College of Pennsylvania, in December, 1866. Here 

 he remained until April, 1869, when he was appointed to the chair 

 of Natural History of the University of Kentucky. He lived at 

 Lexington, Kentucky, until February, 1872, when he was elected 

 Professor of Comparative Anatomy and Veterinary Science in the 

 Massachusetts Agricultural College. Busy with his work at 

 Amherst, and struggling with the fatal disease, tabes mesenterica, 

 he wasted away, and died on the 1st July, 1873, in the forty- 



