I N I . I 



473 



Graft-hybrids, experiments on, i. 280; 

 of Cytisus, ii. 404-6 ; Hildebrand 

 i. 285 : ol potati , i. 286, 359 

 - 



Grafting, I lai w ulty 



of, i. 29 \ ; in ii\ 1 inth I nibs, i. 276 



Graham's Creed i. 393, 



394: ii- 17" 

 Graminese, Darwin on crossing, ii. 

 Granite, explanation of association 



basalt, ii. 125, 145 

 Grasses, range of genera, i. 403; 



cleistogamous, ii. 302 ; fertilisation 



i)f, ii. 291; F. Mtlller on Brazilian, 



"\355 



dratiolet, on behaviour c>l eyes in n 

 ii. 104 



Gravity, comparison between variation 

 and laws of, i. 194 



Gray, Prof. Asa, biographical do) 

 455, 456 ; articles by, i. 161, 166, 

 169, 170; as advocate of Darwin's 

 views, i. 157, 150 ; Darwin's opinion 

 of, i. 169, 170; on Hooker's Ant- 

 arctic pa] er, i. 466, 468 ; on 1 

 genera - i. 99; letters to 1 



win from, i. 214, 245, 421-2, 428- 

 33, 442-4 ; ii. I0O ; letters to, i. 



126, 127, 152-3, 202-3, 242, 419, 

 422-5, 430, 431, 433-5, 455-7, 

 459-60: 11.252-5, 294-7, 299, 327, 



, {84 ; «'ii Darwin's views, i. 126, 



127, 160: plants of the Northern 

 States, i. 432 ; on variation, i. 190-2: 

 book for children by, ii. 390 : on 

 crossing, ii. 254: visits Down, ii. 

 354 ; on dimorphism, ii. 2S0 : on 

 Ag.i-si/, ii. 100: extract from letter 

 to G. F. Wright from. ii. 415; on 

 fertilisation of Cypripedium, ii 270 ; 

 on Gymnadenia tridentata, ii. 311, 

 319* on Habeitaria,, ii. 277: on 

 Passiflora, ii. 316 : on relative rai 



ol I . States and European 

 ii. 252 ; on Sarraeenia, ii. 401 ; men- 

 tioned, ii. j>-j, 289, 409, 434 



1 '.ray, Mrs., ii. 3S5 



(Iray, J. E . biographical note. i. S4 ; 

 and British Museum, i. S4 



Greatest Happiness principle, i. ^27. 

 328 



(-■rebes, as seed-eaters, i. no 



Greenland, absence of Arctic Legumi- 

 nosa>, i. 469 ; connection with N 1 

 way, i. 471 ; flora oi, i. 1 ; 5 

 466, 469, 470 ; introduction of plants 

 by currents, i. 468 : as line ol com- 

 munication of alpine plants, i. 443 : 

 migration of European birds to, i. 

 4*7 



. \V. R. , I 1 anvin on his / 



Life, ii. 41. 42, 4 1 : lettei to, ii. 



5ii G., on A tra ■ 



"• 33 

 Grinnell expediti the 



59 



»9, 100, 260 

 ebach, A. W., .. 249 

 ssulariacese, i. S3 

 Grouse, Natural Selection and col 

 of, i. 143 : Owen describes 

 unci creation, i. 17.S 

 Grypotherium ini, i. 1 1 ; G. 



dotnesticum, ii. 361 



s on, i. 181 

 Gulf-we< in on, i. 54, 50 



Cully, Dr., i. 



Giinther, Dr., visit to Down, ii. 359 

 Gurney, E., articles in Fortm 

 and Comhili. ii. 440, 441 : Pn 

 Sound, ii. 51 



nadenia, course of vessels in flower 

 of, ii. 275 ; Asa Gray on, ii. 

 312, 319; penetration by polle 

 roslellum, ii. 313 

 Gynodicecism in I . ii. 417 



1I.\ AST, Sir Julius von. note on. ii. 



I 54 ; on glacial , ii. 154 

 Habenai es, ii. 24 



also Peristylus viridis); cours 

 vessels in fl iwer, ii. 28? : I rd ] arrer 

 on, ii. 373 ; morphology of floi 

 ii. 276-S ; H . flowers, \\. 1 



a subspecies-; //. 



II chloram idered by Bent- 

 ham a var. of H. 



structure of ovary, ii. 277 

 Hackel, 1.., convert to Darwin' 

 i. 2 



Die Kalkschwamme, i 335 : . 

 in ' 

 let; 



406 : on pangenesi . i. 364 ; 

 ed trans] ition of his book, i. 2 

 . views o! 

 many, i. 3 



substitul lecularh) 



pangenesis, i. 304: visits Down, i. 

 278 ; 150; on absence of col 

 protection in lower animals, ii. 02 : 

 on change o( species, ii. 346 J 

 Linope, ii. 348 : on medusae, ii. 350 

 . experiments on, 

 ii. 411 : sleep-movements, ii. 

 Fabrc's paper on. i. 

 a, Darwin's description 



. woody nature of, i. 163 



