But if we accept this discovery, it leads to the remarkable conclusion that Tertiary man not only existed, but has undergone little change in the thousands of centuries which have since elapsed. The skull is of fair capacity, very much like what might be expected from a female of the Canstadt type, and less rude and ape-like than the skulls of Spy and Neanderthal, or those of modern Bushmen and Australians. And the other bones of the skeleton show no marked peculiarities. This makes it difficult to accept the discovery unreservedly, notwithstanding the great weight of positive evidence in its favour. The great objection to Tertiary man has been, that as all other species had changed, and many had become extinct two or three times over since the Miocene, it was unlikely that an animal so highly specialized as man should alone have had a continuous existence. And this argument of course becomes stronger the more it can be shown that the oldest skeletons differed little if it at all from man of the Quaternary and Recent ages. Moreover, the earlier specimens of Quaternary man which are so numerous and authentic, show, if not anything that can be fairly called the "missing link," still a decided tendency, as they get older, towards the type of the rudest existing races, which again show a distinct though distant approximation towards the type of the higher apes. The oldest Quaternary skulls are dolichocephalic, very thick with enormous frontal sinuses; low and receding foreheads; flattened vertices; prognathous jaws, and slight and receding' chins. The average cranial capacity is about 1150 cubic centimètres, or fully one-fourth less than that of modern European man, and of this smaller brain a larger proportion is in the posterior region. The other peculiarities of the skeletons all tend in the same direction, and, as we have seen in Huxley's description of the men of Spy, sometimes go a long way in the pithecoid direction, even to the extent of not being able to straighten the knee in walking. It would, therefore, be contrary to all our ideas of evolution to find that some 100,000 or 200,000, or more probably 400,000 or 500,000 years prior to these men of Spy and Neanderthal, the human race had existed in higher physical perfection nearer to the existing type of modern man.