62 HOMO V. DARWIN. 



undertake to prove that, if man exists as the result of a 

 separate act of creation, he either cannot possibly vary at 

 all, or must vary in quite different directions from those in 

 which he does vary ? As for the modification of the jaw 

 which Mr. Brace says is taking place in the United States 

 of America, it is no doubt the result of causes in the 

 peculiar physical conditions of the people of that country. 

 If they had to live on nuts, and crack them with their 

 teeth, the modification would unquestionably take another 

 direction. The fact is, my Lord, that Mr. Darwin is 

 reasoning here with his imagination, instead of his intellect, 

 for in no other way than by the aid of that soaring faculty 

 could he reach his conclusion from such premises. 



Lord C. You cannot surely mean, Mr. Darwin, that the 

 circumstance of our teeth and jaws becoming somewhat 

 modified through our civilization proves us to be descended 

 from the same stock with the lower animals for that is 

 the point you are now endeavouring to prove. Would 

 " the younger and rising naturalists " even be satisfied with 

 such evidence ? 



Homo. I should think, my Lord, none of them could, 

 unless such as have not yet cut their wisdom-teeth. 



Darwin. My Lord, " the early male progenitors of man 

 were . . . probably furnished with great canine teeth ; but 

 as they gradually acquired the habit of using stones, clubs, 

 or other weapons, for fighting with their enemies, they 

 would have used their jaws and teeth less and less. In 

 this case, the jaws, together with the teeth, would have 

 become reduced in size, as we may feel sure from innumer- 

 able analogous cases." (Vol. i. p. 144.) 



Homo. No doubt, my Lord, if man has had such pro- 

 genitors as Mr. Darwin imagines, with great canine teeth 

 for fighting, their teeth and jaws would become reduced as 



