“ He was graduated at the Lawrence scientific school of Harvard in 1862, where he specially studied natural history under Louis Agassiz. In 1864 he was called to the chair of zoölogy in Yale, which he still retains. And he was also professor of entomology and comparative anatomy in the University of Wisconsin in 1867-70. The instruction on geology in the Sheffield scientific school of Yale is under his care, and since 1867 he has been curator of zoölogy in the Peabody museum. ”