PREFACE. i x 



his history " (1st ed. p. 488) was not only in full 

 harmonv with the conclusions at which I had ar- 

 rived, respecting the structural relations of apes 

 and men, but was strongly supported by them. 

 And inasmuch as Development and Vertebrate 

 Anatomy were not among Mr. Darwin's many spe- 

 cialities, it appeared to me that I should not be 

 intruding on the ground he had made his own, if 

 I discussed this part of the general question. In 

 fact, I thought that I might probably serve the 

 cause of evolution by doing so. 



Some experience of popular lecturing had 

 convinced me that the necessity of making things 

 plain to uninstructed people, was one of the very 

 best means of clearing up the obscure corners in 

 one's own mind. So, in 1860, I took the Relation 

 of Man to the Lower Animals, for the subject of 

 the six lectures to working men which it was my 

 duty to deliver. It was also in 1860, that this 

 topic was discussed before a jury of experts, at 

 the meeting of the British Association at Oxford; 

 and, from that time, a sort of running fight on the 

 same subject was carried on, until it culminated 

 at the Cambridge meeting of the Association in 

 1862, by my friend Sir W. Flower's public demon- 

 stration of the existence in the apes of those cere- 

 bral characters which had been said to be peculiar 

 to man. 



" Magna est Veritas et prsevalebit ! " Truth is 

 great, certainly, but, considering her greatness, it is 



