moth, and other animals found in this stratum, and seeking shelter in the cave. The hyænas were the normal inhabitants, and returned to their dens when man forsook them. In this manner the intimate association of human implements with the tooth-marked fragments left by the hyænas may be explained, not only in this, but in the succeeding strata.
The red sand furnished implements and the same group of animals in the Church Hole, as well as in Mother Grundy's Parlour.
The Middle Cave-Earth.
Fig. 42.—Quartzite Flake, Robin Hood Cave, 12. a. Section.
The second stage in the history of the occupation of the caverns by man is marked by the lower and middle portions of the cave-earth, b, which contained enormous quantities of bones and teeth of animals introduced by the hyænas, as well as bones broken by the hand of man, fragments of charcoal and implements of flint and quartzite amounting to not less than eleven hundred. The quartzite implements had been manufactured out of pebbles, in which advantage had been taken of the smooth surface to form one side of the cutting edge, and some had probably been intended for the preparation of skins, like those in use in 1873 among the Shoshones of north-western Wyoming. "The Shoshones," writes Captain Jones, "though mostly provided with tools of iron and steel
