1890 THE COLOURS OF ANIMALS 277 



grinder is now grinding away in his hebdomadal 

 manner. 



Yours ever as twelve years ago at the botanical 

 f6te, which always makes romantic 



THE PHILOSOPHER. 



To Professor Poulton. 



Geanies, Ross-shire, N.B. : July 16, 1890. 



My dear Poulton, I went to the tennis ground 

 yesterday week, but, as I expected, on account of the 

 rain, found nobody there. 



I now write to ask you if you would have any 

 objection to my borrowing with acknowledgment 

 figures from your book for mine, supposing the pub- 

 lishers also consent. In particular figs. 1, 2, 6, 10, 

 40, and 41. 



Having now read the book, 1 I may say how 

 greatly it has delighted me. The whole is a wonder- 

 ful story, and I congratulate you on the large share 

 which you have had in adding to this chapter of 

 Darwinism. 



There is only one point I am not quite clear about, 

 viz. pp. 213-215. It is doubtless an advantage to 

 the parasites that the caterpillars should warn them 

 off as having been already * occupied.' But would 

 not this be rather a disadvantage to the caterpillars 

 i.e. to their species ? For in this way, it seems to 

 me, a greater number of caterpillars would become 

 infested than would be the case in the absence of 



1 The Colours of Animals, by E. B. Poulton, M.A., F.R.S., Inter, 

 national Scientific Series, vol. Ixviii. 



