INDEX 



Darwin, Charles Robert, youth, I 

 4 ; S. American observations, 

 1 (see also ' Beagle ') ; Cam- 

 bridge and, vi, 84-91, 203; ' 

 LL.D. (1877), 90; Oxford and, 

 vi,7,86; D.C.L. offered (1870), 

 90. 



Personality of: vi, 57-77; 

 absolute necessity for work' the 

 explanation of misinterpreted 

 changes described in his own 

 mind, vi, 57-66, 79-83, 216, 

 256-8 ; relation to his family, 

 6, 58-9, 87 ; friends, 4-7, 21- 

 6, 66-7, 70-1 ; opponents, 26- 

 30, 28 n. 2, 68-9, 230 ; readers, 

 69; younger men, 69-70, 107- 

 8,215-17; living things, 72-3. 



Intellectual characteristics 

 of: love of knowledge, 75-6 ; 

 powers of observation, 76, 76 

 . 3; comprehensive view and 

 sure insight, v, x, xi, 18, 45-6, 

 123-4, 123 n. 2, 247-53 ; ima- 

 gination and control, 73-5. 



On Evolution: early 

 thoughts, 1, 4, 5, 53 ; letter to 

 his wife on the 1844 essay, 6, 

 87 ; urged to publish by Lyell, 

 12; publication of joint essay, 

 12-15 ; on the steps of evolution 

 xii-xiv, 49, 49 n. 1, 262 n. 3, 

 272-3, 272 . 1; evolution con- 

 tinuous, 49, 50, 148 ; halts and 

 fresh starts, 48, 267, 272-3, 

 279 ; mutation, xiv, 42-7, 254- 

 6; multiple origins, 46, 247- 

 53 ; causes of variation, 273 ; 

 transmission of acquired char- 

 acters considered and accepted 

 by, 33-7, 273 ; on heredity and 

 memory, 38, 38 n. 1; on adap- 

 tation and natural selection, 

 98-100, 99 n. 1, 262 . 3 (see 

 also 'orchids'); slight effects 

 of climate, 173 ; effect of 

 teachings, 52-6, 213-15, 219. j 



On Sexual Selection :- of 

 special interest to, 103, 139- I 

 41, 236; yet aware that it was j 

 vulnerable, 141 ; on Descent 



of Man, &c., and sexual selec- 

 tion, 230-6, 242-5; on sexual 

 selection and warning colours, 

 lll-12,and markings now con- 

 sidered episematic, 112-13 ; 

 and mimicry, 132-5. 



On Mimicry, Protective Resem- 

 blance, &c.: Bates, Wallace, 

 Fritz Miiller, and Trimen in 

 relation to, 46, 123-9, 132-5, 

 144-5, 236, 240-1; on mimetic 

 Planarians, 122; desert plants, 

 98 ; variable colours of octo- 



?us, 108-9 ; S. American toad, 

 10-11 ; Bowers and fruit, 113, 

 113 n. 3; protective resem- 

 blance, 103-9 ; recognition 

 marks unknown to, 112-13. 



Correspondence of : ex- 

 tracts from Darwin's pub- 

 lished letters to the following 

 correspondents appear on the 

 quoted pages : Agassiz, L., 

 68-9; Ansted, D. T., 131; 

 Argyll, Duke of, 251-2 ; Ave- 

 bury, Lord, 203 ; Bates, H.W., 

 123-6, 141; Bentham, G., 253; 

 Brunton, Sir Lauder, 73 ; 

 Darwin,Erasmus (his brother), 

 58 n. 2 ; Farrer, Lord, 20-1 ; 

 Fawcett,H.,16-17; Fox.W.D., 

 72, 76, 203 n. 1 ; Gray, Asa, 

 24-5, 27-8, 43, 131, 257 ; Gur- 

 ney, E., 34 ; Haeckel, E., 69, 

 255; Harvey, W. H., 255; 

 Henslow, J. S., 35, 75-6, 108- 

 9; 111, 122; Hooker, Sir 

 Joseph, 12, 15-16, 21-3, 30-1, 

 48, 51 n. 1, 64-7, 70-4, 104, 

 125, 129, 248-9, 254, 257- 

 8; Homer, L., 6, 86; Hux- 

 ley, T. H., 4, 33, 57-8, 67- 

 8, 74, 257 ; Jenyns (Blome- 

 field), L., 22 n. 1, 42 n. 1 ; 

 Lankester, Sir Ray,72 ; Lewes, 

 G. H., 98, 262 n. 3 ; Litchfield, 

 Mrs. (his daughter), 73; Lyell, 

 Sir Charles, 11 n, 1, 44, 47, 

 173,250-1, 254 ; Masters, Max- 

 well, 254; Meehan, T., 93; 

 Meldola, R., 255 ; Muller, F., 



