The Canstadt type, which includes the men of Neanderthal and Spy, and which was widely diffused, having been found, as far south as Gibraltar, is apparently the oldest, and certainly the rudest and most savage, being characterized by enormous brow-ridges, a low and receding forehead, projecting muzzle, and thick bones with powerful muscular attachments. It is very dolichocephalic, but the length is due mainly to the projection of the posterior part of the brain, the total size of which is below the average. The Cro-Magnon type, which is also very old, being contemporary with the cave-bear and mammoth, is the very opposite of that of Canstadt in many respects. The superciliary ridges are scarcely marked, the forehead is elevated, the contour of the skull good, and the volume of the brain equal or superior to that of many modern civilized races. The stature was tall, the nose straight or projecting, and the chin prominent. The only resemblance to the Canstadt type is, that they are both dolichocephalic chiefly on the posterior region, and both prognathous; but the differences are so many and profound that no anthropologist would say that one of these races could have been derived directly from the other. Still less could he say that the small round-headed race of Furfooz could have been a direct descendant of either of the two former. It is found in close vicinity with them over an extensive area, but generally in caves and deposits which, from their geological situation and associated fauna, point to a later origin. In fact, if we go by European evidence alone, we may consider it proved that the oldest known races were dolichocephalic, that the brachycephalic races came later, and that as long ago as in neolithic times, considerable intercrossing had taken place, which has gone on ever since, producing the great variety of intermediate types which now prevail over a great part of Europe. This inference of the priority of the Canstadt type is strengthened by its undoubted approximation to that of the most savage existing races and of the anthropoid apes. If we take the skulls and skeletons of Neanderthal and Spy, and compare them with those of modern civilized man, we find that while they are still perfectly human, they make a notable approximation towards a savage and Simian type in all the peculiarities which have been described by anthropologists as tests. The most important of all, that of the capacity and form of the brain, is best illustrated by the subjoined diagram of the skulls of the European, the Neanderthal, and the chimpanzee placed in superposition. [Illustration: L'HOMME AVANT L'HISTOIRE. (From Debierre.)]