SPENCER'S EXAMPLES AND 

 ARGUMENTS. 



DIMINUTION OF THE JAWS IN CIVILIZED RACES. 



MR. SPENCER verified this by comparing English 

 jaws with Australian and Negro jaws at the College 

 of Surgeons. 1 He maintains that the diminution 

 of the jaw in civilized races can only have been 



1 Principles of Biology, 166, footnote. The English jaws are 

 somewhat lighter than the Australian jaws, though I could not 

 undertake to affirm that they are really shorter and smaller. In 

 the typical skulls depicted on p. 68 of the official guide to the 

 mammalian galleries at South Kensington, the typical Caucasian 

 jaw is very much larger than the Tasmanian jaw, although the 

 repulsively obtrusive teeth of the latter convey the contrary idea to 

 the imagination. Mr. Spencer's assumption that the ancient 

 Britons had large jaws appears to me eVroneous. (See Professor 

 Rolleston's Scientific Papers and Addresses, i. p. 250.) 



