Another highly successful piece of natural history (by the author-illustrator of Greenhead. Chickens and How to Raise Them etc.) introduces us to the suborder of pinnipedia- seals, eared seals and walruses. Physiology and the main phases of their habits are described in simple yet interesting terms that seem to sense the areas of activity most fascinating to us. The soft precision of Mr. Darling's drawings amplify the text.