Publisher's Synopsis
The geologists estimate that the age of the earth is somewhere between 80 and 800 millions of years; that the Neanderthal race existed for more than 200,000 years; that between 40,000 and 25,000 years ago, as the Fourth Glacial Period softened towards more temperate conditions, a different human type came upon the scene and exterminated Homo Neanderthalensis. These first "true men" descended from some more ape-like progenitors and are classed by ethnologists with the same species as ourselves, and with all human races subsequent to them under one common, specific term, Homo Sapiens. The age of cultivation began with the neolithic phase of human affairs about 10,000 or 12,000 years ago; about 6000 or 7000 years ago men began to gather into the first towns and to develop something more than the loose-knit tribes which had hitherto been their highest political organization.
