ABSTRACT
Dubois' discovery of Pithecanthropus had greatly strengthened the theory that man was cradled in Asia but, during the decade under review, new evidence was found in Africa which began to make it seem more probable that man's earliest ancestors would ultimately be found in that continent, as Darwin had predicted. The discoveries were made in three widely separated areas. From East Africa came the news that Dr L. S. B. Leakey, senior author of the present book, had excavated the remains of relatively recent Stone Age hominids at Nakuru, Elmenteita and Gamble's Cave. Leakey's work proved to be of importance to the story of human evolution, since the uncovering of these prehistoric sites shed new light on the spread of man and his cultures in Africa. 'All the world knows', wrote Keith in 1925, that Sir Arthur Evan restored to Europe a most important chapter which was missing from the early history of her civilization.
