474 



INDEX 



Hallett, on varieties of wheat, i. 314 

 Hamilton, on fertilisation of Datnpiera, 



ii. 258 

 Hamilton, Sir W. on Law of Parsimony, 



i. 370 

 Hancock, A., on British shells, i. 100 ; 



and Royal medal, i. 80, 88, 113 

 Hanley, Dr., Darwin's visit to, i. 6. 

 Marker, A., note on Darwin's work on 



cleavage and foliation, ii. 199 

 Hart man, Dr., on Cicada septendecim, 



ii. 90 

 Harvesting Ants and Trap-door Spiders, 



Moggridge's, i. 337 ; ii. 389 

 Harvey, W. H., biographical note, i. 



141 ; criticism of Origin, i. 141, 160- 



66 ; Darwin's opinion of his book. i. 



96 ; letter to, i. 160-66 ; mentioned, 



i. 152 ; on variation in Fucns, i. 



1 02 

 Haughton, S., on Bees' cells, i. 245 ; 



on depth of ocean, i. 91 ; note on, 



i. 153 ; review by, i. 153 ; mentioned 



"' 5 . 

 Hawaiian Islands, Hillebrand's Flora. 



i. 459 ; plants, ii. 9 



Hawks and owls as agents in seed- 

 dispersal, i. 440 ; bright colours in 

 female, ii. 60 



Head, expression in movement of, ii. 

 Hi 



Hearne, on black bear, i. 179 



Heat, action on rocks, ii. 132. 133 



Heathcote, Miss, ii. 237 



Heaths, as examples of boreal plants in 

 Azores, i. 483 ; and climate, ii. 251 



Heberden, Dr., mentioned, i. 49 



Hector, i. 467 



Hedgehog, movements of spines, ii. 



105 

 Hedychium, Darwin's prediction as to 



fertilisation of, ii. 400 : parahelio- 



tropism, ii. 365 



Hedyotis, dimorphism of, ii. 351 

 Hedysarum, Darwin's experiments on, 



ii. 249, 289 (see Desmodium gyrans) 

 Heer, O., biographical note, ii. 239; 



on continental extension, i. 234, 462 ; 



on plants of Madeira, i. 143 ; on 



origin of species from monstrosities. 



i. 242 ; Darwin sends photograph to, 



ii. 240 ; Flora fossi Us arctics, ii. 239 ; 



letter to, ii. 239-40 

 Heeria, ii, 292, 293 (see also Hetero- 



centron} ; F. M tiller on, ii. 367 

 Heifers, and sterility, i. 226 

 Helianthemum, Baillon ; s observations 



on pollen, ii. 313 

 Heligoland, birds alight on sea near, i. 



285 



Heliotropism, experiments on, ii. 431, 

 432 ; of roots, ii. 418 



Hemsley, W. B., mentioned, i. 63 



Hennessey, ii. 5 



Henry, I. A. (see Anderson- Henry) ; 

 letter to, ii. 297-9 



Henslow, Prof. J. S., life of, i. 188 ; 

 Darwin's affection for, i. 448 ; Dar- 

 win's Cambridge recollections of, i. 

 310 ; death of, i. 188, 189 ; letters 

 to, i. 8-27, 61, 62, 66, 67, 149-51, 

 174, 175, 419, 420; ii. 245. 246; 

 mentioned, i. 99, 100, 185 ; ii. 244, 

 248, 269, 289 ; on Mus mestorius, i. 

 359; visits Down, i. 113; Darwin 

 on his parish work, ii. 246 ; work on 

 crossing, ii. 372 



Henslow, Miss, mentioned, i. 65 



Herbaceous orders, in relation to trees, 

 i. 162, 163 



Herbert, Dean, on heaths of S. Africa, 

 i. 41 ; on Poly gala, i. 102 ; on Cytisus 

 Adami, ii. 248 ; on self-sterility of 

 Hippeastrnm, ii. 315; mentioned, i. 

 414 ; ii. 218 



Hereditary Genius, Francis Gallon's, 

 ii. 41, 43 



Hereditary Improvement, Francis Gal- 

 ton on, ii. 43 



Heredity. Darwin's criticism of Gallon's 

 theory, i. 360-62 



Hermaphroditism, in trees, i. 445 ; 

 Weir onlLepidoptera and, i. 396 ; and 

 nature of generative organs,! i. 250 



Her minium monorchis, ii. 337 



Heron, Sir R.. on peacocks and colour, 

 ii. 58 



Herons, as fruit-feeders, i. 116 



Herschel, Sir J. F. W., edits Manual 

 of Scientific Enquiry, i. 64 ; on 

 Natural Selection, i. 330 ; on the 

 Origin, i. 190-92 ; Physical Geo- 

 graphy, i. 190, 191 ; on providential 

 laws, i. 192 ; on heating of rocks, 

 ii. 133 ; on importance of generalising, 

 ii. 252 ; on study of languages, ii. 229 ; 

 versus Lyell on volcanic islands, 

 ii. 141, 142 ; mentioned, ii. 5 



Heterantherdy two kinds of stamens, 

 ii. 367 ; H. reniformis, ii. 368 



Heterocentron, experiments on, ii. 302 ; 

 seeds of, ii. 284 ; two kinds of sta- 

 mens, ii. 293, 296 ; H. rsseiim, fertili- 

 sation mechanism of, ii. 292, 294 



Heterogeny, Owen on, i. 242 



Heteromorphic, use of term, ii. 310 



Heterosmilax, de Candolle on, i. 369 



Heterostylism, ii. 296, 298, 360, 367 ; 

 Darwin's experiments on, ii. 368 ; ex- 

 ample in monocotyledons of, ii 358 



