332 EVOLUTION [CiiAP. V 



Letter 244 Cirripccles passing through what I have called a pupal 

 state * so far as their mouths arc concerned, rather supports 

 what you say at p. 52. 



At p. 40 your remarks on the Argus 2 pheasant (though I 

 have not the least objection to them) do not seem to me very 

 appropriate as being related to the mental faculties. If you 

 can spare me these proof-sheets when done with, I shall be 

 obliged, as I shall be correcting a new edition of the Origin 

 when I return home, though this subject is too large for me 

 to enter on. I thank you sincerely for the great interest 

 which your discussion has given me. . . . 



Letter 245 To J. D. Hooker. 



The following letter refers to Mivart's Genesis of Species? 



Down, Sept. i6th [1871]. 



I am preparing a new and cheap edition of the Origin, 

 and shall introduce a new chapter on gradation, and on the 

 uses of initial commencements of useful structures ; for this, I 

 observe, has produced the greatest effect on most persons. 

 Every one of his [Mivart's] cases, as it seems to me, can be 

 answered in a fairly satisfactory manner. He is very unfair, 

 and never says what he must have known could be said on 

 my side. He ignores the effect of use, and what I have said 

 in all my later books and editions on the direct effects of the 

 conditions of life and so-called spontaneous variation. I send 

 you by this post a very clever, but ill-written review from 

 N. America by a friend of Asa Gray, which I have republished. 4 



1 " Hence, the larva in this, its last stage, cannot eat ; it may be 

 called a locomotive Pupa ; its whole organisation is apparently adapted 

 for the one great end of finding a proper site for its attachment and 

 final metamorphosis." (A Monograph on the Sub-class Cirripedia. By 

 Charles Darwin. London, Ray Soc., 1851.) 



2 There is no mention of the Argus pheasant in the published 

 paper. 



3 St. George Mivart, F.R.S. (1827-1900) was educated at Harrow, 

 King's College, London, and St. Mary's College, Oscott. He was called 

 to the Bar in 1851 ; in 1862 he was appointed Lecturer in the Medical 

 School of St. Mary's Hospital. In the Genesis of Species, published in 

 1871, Mivart expressed his belief in the guiding action of Divine power 

 as a factor in Evolution. 



4 Chauncey Wright in the North American Review, Vol. CXI 1 1., 

 reprinted by Darwin and published as a pamphlet (see Life and Letters, 

 III., p. 145). 



