THE announcement by Mr. Leakey and his colleagues1 that, in their considered opinion, the Oldoway human skeleton found by Prof. Hans Reck in Tanganyika Territory, in 1913, appears to be of late Kenya Chellean or Kenya Acheulean age, is of outstanding interest. The Oldoway remains represent, unquestionably, an individual of the type of Homo sapiens who was buried in the ultra-contracted posture. Moreover, while there may be some doubt whether it is yet possible exactly to correlate the Chellean and Acheulean periods of Kenya with the corresponding prehistoric phases of Europe and of Great Britain, it does not seem probable that there is any great difference in antiquity between them.