THE ORIGIN AND ANTIQUITY OF MAN 67 



law of Ilaeckel wherein the life eycle of the iiulividiial 

 is shown to recapitulate in vastly briefer form the evo- 

 lutionary history of the race. This is borne out by the 

 fact that the teeth of the Heidelberg man are in their 

 stage of development comparable to those of a youth of 



HBIUBLBEKG MAN CHIMPAN/EK MODERN MAN 



FuiiKK 23. Comparison of Jaw of Modern Man with Jaw of Heidelberg 

 Man and Cliimpanzee. 



fourteen years or less, while their degree of wear indi- 

 cates a fully attained manhood. Thus the Heidelberg 

 man, a full adult for his time and generation, typifies 

 none the less the youth of humanity.^^ 



During the year 1912, a series of fragments of a human 

 skull and a jaw bone were found associated with eolithic 

 implements and the bones of extinct mammals in pleisto- 

 cene deposits on a plateau 80 feet above the river bed at 

 Piltdown, Fletching, Sussex, England. This discovery 

 was made by Mr. Charles Dawson, and Dr. A. S. Wood- 

 ward. The remains were of great importance because 

 while the cranium was typically human, its cubical capac- 

 ity was relatively small, about four-fifths that of the 

 average European skull and twice that of the highest ape. 

 The jaw was similar to the Heidelberg jaw although some- 

 what less massive, but the chin was even more negative 

 than the Heidelberg chin. There is a controversy over 

 whether the jaw is that of a man or of an ancient species 



" LuU, op. cit., p. 380. 



