The bleak northland of Eskimos and polar bears, of the aurora borealis, and of infinite desolate waste has become of supreme importance as a none too firm barrier between ourselves and the Russians. Since the overland dash of Perry, it has been conquered by flying over it and going under it in a submarine, but the real problems of how man lives and how the Eskimo manages, despite the fact that they have had intensive study from various points of view, have not yet yielded a body of scientific knowledge which enables those who make plans to devise a program of exercise, food, water, clothing, and shelter which will make probable, much less guarantee, successful performance when man is removed from his temperate environment and thrust into the Arctic, not only to survive but to achieve his mission as a soldier on the ground or a flier. This book by