THE Fourth International Congress for Applied Mechanics was held this year at Cambridge from July 3rd to July 9th, under the Presidency of Professor C. E. Inglis, O.B.E., F.R.S. At a conversazione at the Engineering Laboratory, by invitation of Professor Inglis and the staff of the University Engineering Department, members of the Congress were enabled to exhibit their own apparatus. A visit to the Cavendish Laboratory was also arranged for those especially interested in Atomic Physics.