The fourth General Assembly of the I.U.P.N. was held at Copenhagen from 25th August to 3rd September, 1954, under the presidency of Dr. C. J. Bernard, who may be called the founder of the Union. His term of office being over, he is succeeded by Professor Roger Heim of France. Delegates and observers came from the U.S.A., Japan, India, Peru, New Zealand, U.S.S.R. and nearly all European countries. Among the British delegation were Lord Hurcomb, President of the Society for the Promotion of Nature Reserves, Mr. Max Nicholson, Director-General of the Nature Conservancy, Dr. J. Berry, Director of the Nature Conservancy for Scotland, and Lieut.-Colonel C. L. Boyle, Secretary of the Fauna Preservation Society.