Towards the back of chamber A the strata thinned out rapidly and were so unproductive that we thought it advisable to leave it unexplored, and turn to what proved to be the mouth of Chamber B (fig. 1).
The Exploration of Chamber B.
The Red Sandy Cave-earth.—The deposits in Chamber B filled it up to the roof, and consisted of the strata previously described, with the exception of the surface-soil (No. 5) and the ferruginous sand (No. 2).
The red sandy cave-earth (see figs. 5, 6, & 7, No. 4) had been disturbed here as in chamber A; it contained bones and teeth of Bison, Reindeer, Hyæna, and Bear. At a distance of 19 feet 6 inches from the entrance, and on the north side, a human skull was met with, in a small recess in the wall, at a depth of 2 feet 9 inches from the surface, here in contact with the roof. Close to it, and above it, were the vertebra of a bison and a quartzite splinter. It is, however, in spite of this evidence, in all probability, as we shall see presently, of a later age than the associated Pleistocene remains.
The Red Clay.—The red clay (No. 3) as it passed into chamber B gradually increased in thickness, attaining a maximum of 3 feet 3 inches at the further end. It was very stiff and contained the remains of Hyæna, Bison, Hippopotamus, and Rhinoceros leptorhinus, but no implements. It rested immediately on the unfossiliferous
