AN appeal, signed by Sir William Beveridge, Prof. P. M. S. Blackett, Mr. E. Carter, Mr. J. G. Crowther, Dr. C. D. Darlington and Sir Richard Gregory, has been issued for literature dealing with advances made in Allied Countries during the War for dispatch to liberated Europe. In particular, French men of science need this material as quickly as possible. In Paris, there is gas and electricity for only one or two hours in the evenings, so that experimental work is scarcely possible. All material sent to France would be fully used. Literature would go to the Centre National de Recherche Scientifique in Paris, which is in touch with the whole body of French scientific workers. Single copies would be microfilmed, and films and abstracts distributed. Thus the greatest possible use could be made immediately of any periodicals that can be sent to them. Sets of journals and single copies should be sent to the Association of Scientific Workers, Hanover House, 73 High Holborn, London, W.C.1.