My object in the present work has been to give in a condensed form the essential facts of the twin sciences of anthropology and ethnography. The very nature of such an undertaking condemns the author to be brief, and at the same time somewhat dogmatic; inevitable gaps occur, and numerous inequalities in the treatment. To obviate, partly at least, such defects, I have endeavoured not merely to present the actual facts of the subject, but also to summarise, with as much fidelity as possible, the explanations of these facts, in so far as such may be educed from theories among which there is often sufficient perplexity of choice. In many cases I have ventured, however, to give my personal opinion on different questions, as, for instance, on the signification of the laryngeal sacs among anthropoid apes, on many questions of anthropometry in general, on the classing of "states of civilisation," on fixed and transportable habitations, on the classification of races, on the races of Europe, on the Palae-American race, etc.