A.S. Romer
published-by Penguin Books 
The purpose of this book is to give a comprehensive picture of the evolution of the human body. This cannot of course, be done by considering man alone. It must Include the history of the whole group of creatures known as the vertebrates, or backboned animals, to which man belongs, This involves not only the other warm-blooded hairy creatures to which man is closely. alied, but such varied torms as birds, reptiles, frogs and salamanders, and fishes, for We cannot properly understand man, his body or mind unless we understand his vertebrate ancestry. Starting with the earliest vertebrates, volume 1 traces the main steps in the story of evolution from fish to man, and also deals with various groups of fishes, birds, reptiles, and mammals which are of interest to human evolution. This volume 
deals with human origins and races. It includes a detailed account of the evolution and workings ot the human body, and concludes with a discussion of embryology based on the development of man.