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Rh restored skull, the position of the absent bones of the face being shown in white (Fig. 8). Also, for comparison with a sketch of the mandible (Fig. 9 B), there is one of a young Chimpanzee (A), from which the strong resemblance between them will be seen at a glance.

As to the flints, I do not deny the possibility of their being of pre-Chelléen date, as undoubtedly man produced ruder implements before he succeeded in manufacturing the highly finished tools of the coup-de-poing