THE American, Chemical Society Prize in pure chemistry of 1,000 dollars has been awarded for 1942 to Dr. John Lawrence Oncley, associate in physical chemistry at the Harvard MedicaJ School and instructor in chemistry at the Massachusetts Institute of Technology. This Prize is given annually for “outstanding research in pure chemistry by a man or woman less than. thirty-six years old”., Dr. Oncley has made important contributions to protein chemistry, and he has investigated the dielectric properties of gases, insulating oils, resins, rubbers and proteins, developing radio-frequency bridge methods suitable for precise dielectric constant determinations with proteins. With the aid of these methods he completed the first satisfactory study of the dielectric dispersion behaviour of water-soluble proteins. This work, constitutes one of the significant contributions of recent years to protein chemistry and has led to further studies on the molecular size and shape of protein molecules.