The caverns themselves may be divided into those of residence, of sepulture, and of driftage, though one cavern has often successively assumed two at least of these characters. In the caverns of residence large accumulations have been formed of ashes, charcoal, bones, and other debris of cookery, among which are found flint and bone implements, the general character of which, as well as that of the needles, stone hammers, mortars for paint, and other domestic appliances, are not more dissimilar from those of the Red Indian and Esquimau races in North America than these are from one another, and in many things, as in the bone harpoons, the resemblance is very striking indeed. In tendency to imitative art, and in the skill of their delineations of animals, the prehistoric men seem to have surpassed all the American races except the semi-civilized mound-builders and the more cultivated Mexican and Peruvian nations. With regard to the residence of these men of the mammoth age in caverns, several things are indicated by American analogies to which some attention should be paid. It is not likely that caverns were the usual places of residence of the whole population. They may have been winter houses for small tribes and detached families of fugitives or outlaws, or they may have been places of resort for hunting parties at certain seasons of the year. The large quantities of broken and uncooked bones of particular species, as of the horse and reindeer, in some of the caverns, would farther indicate a habit of making great battues, like those of the American hunting tribes, at certain seasons, and of preparing quantities of pemmican or dried meat preserved with marrow and fat for future use. The number of bone needles found in some of the caves would seem to hint that, like the Americans, they sewed up their pemmican in skin bags. The multitude of flint flakes and of rude stone implements applicable to breaking bones certainly indicates a wholesale cutting of flesh and preparation of marrow. In the "Story of the Earth," I have suggested in connection with this that there may have been towns or villages of these people unknown to us, and which would afford higher conceptions of their progress in the arts. This anticipation appears recently to have been realized in the discovery of such a town or fortified village of the mammoth age at Soloutre, in France, and which seems to afford evidence that these ancient people had already domesticated the horse, using it as food as well as a beast of burden, in the manner of the Khirgis and certain other Tartar tribes of Central Asia.[135] This, with the undoubtedly high cerebral organization indicated by the skulls of the mammoth age, notably raises our estimate of the position of man at this early date.