MEMOIR OF ABBOTT LAWRENCE ROTCH.

Abbott Lawrence Rotch was born in Boston, January 6, 1861. He was graduated from the Massachusetts Institute of Technology (S.B.) in 1884. From 1888 to 1891, and again from 1902 to 1906, he held the appointment of assistant in meteorology at Harvard, a position which involved no teaching and in which no salary was paid. In 1906 he was appointed professor of meteorology, an honor which he prized very highly, and which gave him the position on the teaching staff of the university to which he was in every way fully entitled. He was the first professor of meteorology who has occupied that position at Harvard, and he served in this professorship without pay.