CHAPTER I.—Definition of Man—How he differs from other Animals—Origin of Man—In what parts of the Earth did he first appear?—Unity of Mankind, evidence in support—What is understood by species in Natural History—Man forms but one species, with its varieties or kinds—Classification of the Human Race
CHAPTER II.—General characteristics of the human race—Organic characteristics—Senses and the nervous system—Height—Skeleton—Cranium and face—Colour of the skin—Physiological functions—Intellectual characteristics—Properties of human intelligence—Languages and literature—Different states of society—Primitive industry—The two ages of prehistoric humanity
