370 SPREAD OF EVOLUTION. [1861. 



Brachiopodous species ; I am sure it will be a most valuable 

 contribution to knowledge. 



Pray forgive this very egotistical letter, but you yourself 

 are partly to blame for having pleased me so much. I have 

 told Murray to send a copy of my new edition to you, and 

 have written your name. 



With cordial thanks, pray believe me, my dear Sir, 



Yours very sincerely, 



Ch. Darwin. 



[In Mr. Davidson's Monograph on British Brachiopoda 

 published shortly afterwards by the Palaeontographical Society, 

 results such as my father anticipated were to some extent 

 obtained. " No less than fifteen commonly received species 

 are demonstrated by Mr. Davidson by the aid of a long series 

 of transitional forms to appertain to . . . one type.' 





In the autumn of i860, and the early part of 1861, my 

 father had a good deal of correspondence with Professor 

 Asa Gray on a subject to which reference has already been 

 made the publication, in the form of a pamphlet, of Pro- 

 fessor Gray's three articles in the July, August, and October 

 numbers of the 'Atlantic Monthly,' i860. The pamphlet was 

 published by Messrs. Triibner, with reference to whom my 

 father wrote, " Messrs. Triibner have been most liberal and 

 kind, and say they shall make no charge for all their trouble. 

 I have settled about a few advertisements, and they will 

 gratuitously insert one in their own periodicals." 



The reader will find these articles republished in Dr. Gray's 

 ' Darwiniana,' p. 87, under the title "Natural Selection not 

 inconsistent with Natural Theology." The pamphlet found 

 many admirers among those most capable of judging of its 

 merits, and my father believed that it was of much value in 

 lessening opposition, and making converts to Evolution. His 



* Lyell, ' Antiquity of Man,' first edition, p. 428. 



