On March 18 and March 19, 1933, the human biology section of the Royal Anthropological Institute met to consider Leakey’s discoveries at Kanam and Kanjera. Chaired by Sir Arthur Smith Woodward, 28 scientists issued reports on four categories of evidence: geological, paleontological, anatomical, and archeological (Woodward
The anatomical committee said the Kanjera skulls exhibited “no characteristics inconsistent with the reference to the type
About the Kanam jaw, the anatomy experts said: “With the possible exceptions of the thickness of the symphysis, the conformation of the anterior internal surface, and what seems to be a large pulp-cavity of the first right molar tooth, the Committee is not able to point to any detail of the specimen that is incompatible with its inclusion in the type of the
The species designation
Although the committee stated that the remains could be classified as
11.2.4 Boswell strikes Again
Shortly after the 1933 conference gave Leakey its vote of confidence, geologist Percy Boswell began to question the age of the Kanam and Kanjera fossils. Leakey, who had experienced Boswell’s attacks on the age of Reck’s skeleton, decided to bring Boswell to Africa, hoping this would resolve his doubts. But all did not go well.
Upon returning to England, Boswell (1935) submitted to
1931–32) neither marked the localities on the ground nor recorded the sites on a map. Moreover, the photograph of the site where the mandible was found, exhibited with the jaw fragment at the Royal College of Surgeons, was, through some error, that of a different locality.” Having examined Leakey’s original field notes, Boswell (1935) said “it is regrettable that the records are not more precise.”
Boswell found the geological conditions at the sites confused. He said that “the clayey beds found there had frequently suffered much disturbance by slumping.” From this Boswell (1935) concluded: “The date of entombment of human remains found in such beds would be inherently doubtful.”
But what about the committee that had given Leakey its endorsement? “It seems likely,” said Boswell (1935) “that if the facts now brought forward had been available to the Committee, a different report would have been submitted.” Boswell concluded that the “uncertain conditions of discovery . . . force me to place Kanam and Kanjera man in a ‘suspense account.’”
11.2.5 Leakey Responds