Sir Julian Huxley was especially noted for his versatility - great biologist, first Director General of UNESCO, Director of the London Zoo, bird watcher, popular writer of science and a champion of wildlife conservation. This book is a biographical account of Huxley as revealed through his own correspondence and that of his contemporaries. An introductory biographical summary is followed by his and others' letters and a collection of some of his writings. A complete bibliography of Huxley is included. The book should be of interest to biologists, students of the United Nations, historians of science and nature conservationists.