THE ORIGIN AND ANTIQUITY OF MAN 67 



law of Haeckel wherein the life cycle of the individual 

 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 



HEIDELBERG MAN CHIMPANZEE MODERN MAN 



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

 Man and Chimpanzee. 



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. 28 



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. The discoverers regard this 

 relic as a specimen of a distinct genus of the human 



28 Lull, op. cit., p. 380. 



