230 PUBLICATION OF THE 'ORIGIN OF SPECIES.' [1859, 



single species alone, of the widely distributed genus Cam's. 

 Besides this, the close resemblance of at least three kinds of 

 American domestic dogs to wild species still inhabiting the 

 countries where they are now domesticated, seems to almost 

 compel admission that more than one wild Canis has been 

 domesticated by man. 



I thank you cordially for all the generous zeal and interest 

 you have shown about my book, and I remain, my dear Lyell, 

 Your affectionate friend and disciple, 



CHARLES DARWIN. 



Sir J. Herschel, to whom I sent a copy, is going to read my 

 book. He says he leans to the side opposed to me. If you 

 should meet him after he has read me, pray find out what he 

 thinks, for of course, he will not write ; and I should ex- 

 cessively like to hear whether I produce any effect on such a. 

 mind. 



T. H. Huxley to C. Darwin. 



Jerniyn Street, W., 



November 23rd, 1859. 



MY DEAR DARWIN, I finished your book yesterday, SL 

 lucky examination having furnished me with a few hours of 

 continuous leisure. 



Since I read Von Bar's * essays, nine years ago, no work on 

 Natural History Science I have met with has made so great 

 an impression upon me, and I do most heartily thank you for 

 the great store of new views you have given me. Nothing, I 

 think, can be better than the tone of the book, it impresses 

 those who know nothing about the subject. As for your 

 doctrine, I am prepared to go to the stake, if requisite, in sup- 

 port of Chapter IX., and most parts of Chapters X., XI., XII., 

 and Chapter XIII. contains much that is most admirable,. 



* Karl Ernst von Baer, b. 1792, ury. He practically founded the 

 d. at Dorpat 1876 one of the most modern science of embryology, 

 distinguished biologists of the cent- 





