After devoting considerable research to the recovery of the traces of early arts in Britain, and realising from many primitive disclosures some clear conception of the barbarian of Europe’s prehistoric dawn, it has been my fortune to become a settler on the American continent, in the midst of scenes where the primeval forests and their savage occupants are in process of displacement by the arts and races of civilised Europe. Peculiarly favourable opportunities have helped to facilitate the study of this phase of the New World, thus seen in one of its great transitional eras: with its native tribes, and its European and African colonists in various stages of mutation, consequent on migration, intermixture, or collision. In observing the novel aspects of life resulting from such a condition of things, I have been impressed with the conviction that many of the ethnological phenomena of Europe’s prehistoric centuries are here reproduced on the grandest scale. Man is seen subject to influences similar to those which have affected him in all great migrations and collisions of diverse races. Here also is the savage in direct contact with civilisation, and exposed to the same causes by means of which the wild fauna disappear. Some difficult problems of ethnology have been simplified to my own mind; and opinions relative to Europe’s prehistoric races, based on inference or induction, have received striking confirmation. Encouraged by this experience, I venture to set forth the results of an inquiry into the essential characteristics of man, based chiefly on a comparison of the theoretical ethnology of primitive Europe, with such disclosures of the New World.