The lines of peroxide of manganese must have been accumulated on the old floors of the cave, because they were associated with numerous splinters and gnawed animal remains; and there can be no doubt that the latter were introduced by the hyænas. Those animals have a peculiar habit, as Dr. Buckland proved by experiment, of gnawing similar bones in precisely the same way; and a comparison of the relics of the meals of the hyænas in the Zoological Gardens with those in the cave, shows that the latter have passed between the jaws of a like animal that once inhabited Somersetshire. Coprolites of the same animal were very abundant, and in some places formed a greyish-white layer of phosphate of lime. There were also other equally unmistakeable traces of the animal in fragments of bone, polished by their tread, as in the Kirkdale cave. It is, therefore, only reasonable to suppose that these remains of animals were brought into the cave from time to time by hyænas, and left on the floors. That they were not introduced by water is proved by the preservation of the delicate processes and points of bone, which would certainly have been broken _in transitu_. Since, then, the implements, which, beyond doubt, had been fashioned by man, were underneath one of these old floors, it was certain that man was contemporary in the district with the hyæna and the animals on which it preyed, and the fact that they were found only on one spot implies that they were deposited by the hand of man. To suppose that a savage would take the trouble to excavate a trench twenty-four feet long--for twelve feet of the former mouth of the cave had been cut away--with miserable implements, and consequently with great labour, and having excavated it again to fill it up to the very roof, is little less than absurd. Nor could such an operation take place in such a deposit, without the stratification of the layers being destroyed. The absence of pottery and human bones precludes the idea of the cave ever having been a place of sepulture, such as Aurignac or Bruniquel. This discovery, therefore, of itself stamps the contemporaneity of man with the extinct mammalia, and following close on the similar discoveries in Brixham cave, to be mentioned presently, puts the question beyond all doubt.