1858.] NATURAL SELECTION. 485 



I must try and see you before your journey ; but do not 

 think I am fishing to ask you to come to Down, for you will 

 have no time for that. 



You cannot imagine how pleased I am that the notion of [ 

 Natural Selection has acted as a purgative on your bowels of 

 immutability. Whenever naturalists can look at species 

 changing as certain, what a magnificent field will be open, — j 

 on all the laws of variation, — on the genealogy of all living ! 

 beings, — on their lines of migration, &c., &c. Pray thank : 

 Mrs. Hooker for her very kind little note, and pray, say how i 

 truly obliged I am, and in truth ashamed to think that she ■ 

 should have had the trouble of copying my ugly MS. It was 

 extraordinarily kind in her. Farewell, my dear kind friend. 



Yours affectionately, 



C. Darwin. 



P. S. — I have had some fun here in watching a slave-mak- 

 ing ant ; for I could not help rather doubting the wonderful 

 stories, but I have now seen a defeated marauding party, 

 and I have seen a migration from one nest to another of the 

 slave-makers, carrying their slaves (who are house, and not 

 field niggers) in their mouths ! 



I am inclined to think that it is a true generalisation that, 

 when honey is secreted at one point of the circle of the 

 corolla, if the pistil bends, it always bends into the line of the 

 gangway to the honey. The Larkspur is a good instance, in 

 contrast to Columbine, — if you think of it, just attend to this 

 little point. 



C. Darivm to C. Lyell. 



King's Head Hotel, Sandown, Isle of Wight, 



July iSth [1858]. 



. . . We are established here for ten days, and then go on 

 to Shanklin, which seems more amusing to one, like myself, 

 who cannot walk. We hope much that the sea may do H. 

 and L. good. And if it does, our expedition will answer, but 

 not otherwise. 



