The Fourth Assembly of the International Union of Geodesy and Geophysics held at Stockholm, Sweden, August 14–23, 1930, was attended by some 302 delegates and guests from 36 countries. Countries not yet adhering to the International Union having representation through invited guests were Austria, China, Esthonia, Germany, Union of Socialistic Soviet Republics, and Venezuela. A total of 27 persons, including 14 official delegates, represented the United States and took a leading part in bringing about the good‐will reflected in the attendance of guests from Germany and Austria. The principal activity related to the unanimous adoption of the new Statutes. These Statutes call for the designation of the international sections hereafter as associations and effect a greater decentralization of the Union's own tasks so as to make its associations practically autonomous. The unit of contribution was increased so that the annual contribution from the United States will hereafter be about $3,100. Other important.actions included the approval of the proposed Jubilee International Polar Year in 1932–33, an agreement to promote cooperation of the International Research Council and its unions with societies, organisations, or institutions engaged in work extending beyond national lines, and consideration of means to more effectively distribute publications of the International Union and of its associations. The meeting place for the Fifth General Assembly of the union in 1933 was designated to be Lisbon. Portugal. Dre Lai lemand was reelected President of the Union and Brigadier Winterbotham was elected General Secretary. The following Americans are officers of the international associations: Geodesy, William Bowie, President; Seismology, H. F. Reid, Vice‐President; Terrestrial Magnetism and Electricity, J. A. Fleming, President; Oceanography, G. W. Littlehales, Vice‐President; Volcanology, H. S. Washington, Vice