Two A. Cressy Morrison Prizes for 1945 have been awarded as follows: A prize of 200 dollars for the paper entitled “Electromesons”, by John Archibald Wheeler, Princeton University, Princeton, New Jersey ; a prize of 200 dollars for the paper entitled “Limitations of Optical Image Formation”, by Max J. Herzberger, Eastman Kodak Research Laboratories, Rochester, New York. An honourable mention was awarded for the paper entitled “The Golgi Apparatus”, by Leonard G. Worley, Department of Biology, Brooklyn College, New York. It is announced that Mr. Morrison has renewed his offer of two prizes of 200 dollars each to be competed for during the year 1946, for the two most acceptable papers in a field of science covered by the Academy or an affiliated society ; these prizes are to be awarded in December 1946. Mr. Morrison has also offered a prize in astronomy for 1946, in renewal of those awarded in recent years, of 500 dollars for the paper adjudged by the Council of the Academy to be the most meritorious contribution on the subject of solar and stellar energy.