MB. C. N. HINSHELWOOD, who succeeds Prof. Frederick Soddy as Dr. Lee's professor of inorganic and physical chemistry at Oxford, is a leader of physical chemistry in Great Britain. Still in his thirties, he has made a great reputation by his work on gas reactions. He was formerly fellow of Balliol College and University lecturer in chemical dynamics. He is a fellow of Trinity College, a fellow of the Royal Society, an honorary doctor of science of Dublin and a delegate of the Clarendon Press. He is the head of the Balliol and Trinity Colleges Laboratories, and is the first member of this school of physical chemistry to become professor at Oxford. He is a man of wide interests outside his professional work and, in particular, an expert linguist. At Oxford, professorships are attached to particular colleges. In the ordinary way Prof. Hinshelwood should migrate to, and become a fellow of, Exeter College on his appointment. It has happily been arranged, however, that he remain at Trinity College, and in charge of the laboratories there, until an official University institute of physical chemistry be built in the Parks.