Alfred Russel Wallace 



antedating of the first payment is a very liberal and 

 thoughtful act; but I do not think it is any way excep- 

 tional as regards myself. I am informed it is the custom 

 because, as no payment is made after the death of the 

 person, if the first payment were delayed the proposed 

 recipient might die before the half-year (or quarter-day) 

 and thus receive nothing at all. 



I suppose you sent the right address to Mr. Seymour. I 

 have not yet heard from him, but I daresay I shall during 

 the next week. 



As I am assured both by Miss Buckley and by Prof. 

 Huxley that it is to you that I owe in the first place this 

 great kindness, and that you have also taken an immense 

 amount of trouble to bring it to so successful issue, I must 

 again return you my best thanks, and assure you that there 

 is no one living to whose kindness in such a matter I could 

 feel myself indebted with so much pleasure and satisfaction. 

 — Believe me, dear Darwin, yours very faithfully, 



Alfred R. Wallace. 



Down, BeckenJiam, Kent, July 9. 



My dear Wallace, — Dr. G. Krefft has sent me the enclosed 

 from Sydney. A nurseryman saw a caterpillar feeding on 

 a plant and covered the whole up, but, when he searched 

 for the cocoon [pupa], was long before he could find it, so 

 good was its imitation, in colour and form, of the leaf to 

 which it was attached. 



I hope that the world goes well with you. Do not trouble 

 yourself by acknowledging this. — Ever yours, 



Ch. Darwin. 



Accompanying this letter, which has been published in 

 ^^ Darwin and Modern Science" (1909), was a photograph 

 of the chrysalis {Papilio sarpedon choredon) attached to a 



316 



