SINCE: the time of Charles Darwin, fossil remains dug from the earth have shown man as he was at many points in his evolution. Nevertheless, important gaps in the record remained. Two of the most significant were filled recently by the discovery in East Africa of an early, tool-making man and of the man who later fashioned the well-known Chellean tools. This new edition of Man, Time, and Fossils has been prepared to present this addition to the record and to man's story.
This edition also gives the new dating of the earth. In the last few years, highly precise measurements have settled the long disputed question of the earth's age-and of the great time backdrop of man.
I should also like to express my appreciation for the valued assistance of Dr. Louis S. B. Leakey and Dr. F. Clark Howell.
Paris, May 26, 1961