UNDER the patronage of the International Union for the Scientific Investigation of Population Problems, a congress will be held in Paris for the discussion of these problems on July 29–August 1. The congress is organized by the French National Committee of the Union, under the presidency of M. Adolphe Landry, a former Cabinet Minister. Among the members of the organizing committee may be mentioned, MM. P. Rivet, J. Alquier, H. Bunle, A. Demangeon, M. Huber, R. Legendre, A. Siegfried and other distinguished workers in the field of demography. It is expected that there will be many representative delegations from a large number of countries. From Great Britain there will be members of the British Population Society, presided over by Prof. C. B. Fawcett, and of the Population Investigation Committee, presided over by Prof. A. M. CarrSaunders, and others. America will send Prof. P. K. Whelpton, Dr. Warren S. Thompson and others. Delegations are also expected from Belgium, Czechoslovakia, Denmark, Germany, Holland, Hungary, Italy, Rumania, Sweden, and perhaps India and Japan.