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MAN IN THE SCHEME OF EVOLUTIONIn his bodily structure Man shows such remarkable resemblances to the lower animals that it now seems astonishing to us that his kinship with them should ever have been seriously controverted. His skull and skeleton are composed of the same bony elements, his muscular system is made up of identical muscles disposed in the same general pattern, his heart and blood-vessels are constructed on exactly the same plan, and even his brain (though it is more elaborate) is made of the same kind of nervous tissue and built up on a foundation of the same basic elements. Anatomically, therefore, Man is simply one of the animals. But we can go further than that. We can say that he belongs to the group of vertebrate animals