“ Thenceforward he devoted his whole time to a systematic examination of the French caves, his first publication on the subject being The Antiquity of Man in Western Europe (1860) , followed in 1861 by New Researches on the Coexistence of Man and of the Great Fossil Mammifers characteristic of the Last Geological Period. In this paper he made public the results of his discoveries in the cave of Aurignac, where evidence existed of the contemporaneous existence of man and extinct mammals. ”