^^^^ ZOOGENESIS '^^'^ 



such a thing as a "missing link" ever existed, or 

 indeed could ever have existed. 



Yet since both man and the apes belong to the same 

 division of the mammals — the Primates — and we can- 

 not doubt the continuity of life from parent to child 

 from the very first, man and the apes must have had 

 at some time in the past a common ancestor. 



Our know^ledge of man goes back only to the end 

 of the period — the Pliocene — just preceding the Pleis- 

 tocene or Ice Age at the furthest, and many authori- 

 ties believe that the earliest remains of man are not 

 older than the earlier portion of the Pleistocene. 



In the case of the Piltdow^n man all authors agree 

 that the fragments of the brain case and the nearly 

 complete nasal bones are human. Sir Arthur Keith 

 v^rote that the brain case of v^hich the original frag- 

 ments formed a part was essentially the same as that 

 of modern man in both form and capacity, the capacity 

 being about 1,400 cubic centimeters. Others have 

 calculated the capacity as about 1,2.40, 1,100 or 1,170 

 cubic centimeters. In the case of the Trinil, Java, 

 remains, all authors agree that the skull cap is 

 strangely different from the corresponding part of 

 other known mammals, living and fossil. 



This is all the tangible evidence we have regarding 

 early man. But the fragments of the brain case and 

 the nasal bones of the Piltdown find are sufficient to 

 indicate that man has been essentially the same since 

 about the beginning of the Pleistocene, or in other 

 words that the developmental histories of man and 

 of the anthropoid apes have run parallel, and have 



[2-2-7] 



