THE desirability of setting up an international federation of atomic scientists was discussed at the conference held by the Atomic Scientists Association at Oxford during July, at which foreign men of science were present. Because of the diverse forms in which atomic scientists were or might be organised in different countries, and of the difficulties of getting one central body to speak on behalf of scientific men scattered over the world, it was decided that it was not warranted at present. The need for international contacts, however, was stressed, and one man of science from each of the foreign countries represented (France, Holland, India, Norway, Sweden, Switzerland and the United States) volunteered in a personal capacity to be responsible for liaison and for the exchange of published literature between the Atomic Scientists' Association and any bodies already existing or which might be set up with similar aims in their own countries. To extend this, a letter setting out the aims of the Association—“To maintain in Great Britain an informed public opinion about atomic energy, in order that all possible-steps shall be taken to secure, in the words of the Washington Declaration of November 1945, international control to the extent necessary to insure its use only for peaceful purposes”—was afterwards sent to the academies of science and various scientific men in countries not represented at the conference, with a request that it might be brought to the notice of the scientific workers of their country and, if possible, a correspondent be appointed with whom the Atomic Scientists' Association can keep touch. The countries circularized were the Argentine, Australia, Belgium, Brazil, Canada, China, Czechoslovakia, Denmark, Jugoslavia, New Zealand, Poland, South Africa and the U.S.S.R.