These monuments and sculptures are certainly the work of a race very different from the present natives, who are altogether incapable of producing anything of the kind, and who retain absolutely no traditions respecting their predecessors. This complete oblivion, which may appear rather strange, is by no means rare amongst savage races, and Sir John Lubbock cites a great many very curious examples. “Oral traditions,” says Broca, “are changed and distorted by each succeeding generation; and are at last effaced to give place to others as transitory, and thus the most important events are, sooner or later, relegated to oblivion.”43 We have dwelt at considerable length in another volume44 on the earliest inhabitants of America. Much still remains unknown in spite of the considerable and important work done of late years. The very name of the New World seems to be altogether out of place, America being as old, if not older, than any continent of the Eastern Hemisphere. Lund has brought forward weighty reasons for his theory that the central plateau of Brazil was already a country when the rest of the continent was still submerged or at least represented merely by a few small islets. This theory, however, even if it could be absolutely proved, would not help us to fix the date of the earliest presence of man in America, still less to say by what route he arrived there. [Illustration: 5.] Fort Hill, Ohio. Certain facts, amongst which I would, in the first place, quote the discoveries of Dr. Abbott in the alluvial deposits of the Delaware and those recently announced in Nevada,45 prove the contemporaneity of men like ourselves with the great edentate and pachydermatous mammals, which were the most characteristic creatures of the American fauna. The prehistoric inhabitants of North America were familiar with the mastodon, those of South America with the glyptodon, the shell of which on occasion served as a roof to the dwelling of primeval reran, which dwelling was often but a den hollowed out of the ground. As in Europe, the early inhabitants of America had to contend with powerful mammals and fierce carnivora; and in the West as in the East man made up in intelligence for his lack of brute force, and however formidable an animal might be, it was condemned to submit to, or disappear before, its master. In course of time Sedentary replaced Nomad races; shell heaps, some of marine, some of riverine and lacustrine species, but all alike mixed with a great variety of rubbish, were gradually piled up extending for many miles and covering many acres of ground, bearing witness to the existence of a population already considerable. [Illustration: 6.] Group of sepulchral mounds.