INDEX 



345 



Hildebrand, Prof. , on the self-sterility 



of Corydalis, ii. 12-13 

 Hilgendorf, on intermediate varieties, 



ii. 72 

 Himalaya, glaciers of, ii. 167 



, plants of, ii. 171 



Hippeastrum aulicum, ii. 13 



Hippocampus, i. 322 



Hofmeister, Prof., on the movements 



of plants, i. 335 

 Holly-trees, sexes of, i. 138 

 Hooker, Dr., on man not causing 



variability, i. 120 

 , ou trees of New Zealand, i. 



147 

 ' , on acclimatization of Himalayan 



trees, i. 200 

 — — , on flowers of umbelliferae, i. 205 

 , on the position of ovules, i, 



295 

 — — , on glaciers of Himalaya, ii. 167 

 , on glaciers of the Lebanon, ii. 



167 

 , on plants of Tierra del Fuego, 



ii. 169-170 

 , on plants of mountains of Fer- 

 nando Po, ii. 170 



, on Australian plants, ii. 171, 199 



, on algae of New Zealand, ii. 



171-172 

 , on vegetation at the base of the 



Himalaya, ii. 173 

 . , on relations of flora of America, 



ii. 176 

 , on flora of the Antarctic lands, 



ii. 177, 198 

 , on the plants of the Gkilapagos, 



ii. 190, 197 

 Hooks, on palms, i. 273 



, on seeds, on islands, ii. 190 



Hopkins, Mr., on denudation, ii. 69 

 Hornbill, remarkable instinct of, i. 392 

 Horns, rudimentary, ii. 270 

 Horsey fossil, in La Plata, ii. 103 



Horse, proportions of, when young, 

 ii. 257 



Horses destroyed by flies in Paraguay, 

 i. 111-112 



, striped, i. 225 



Horticulturists, selection applied by, 

 i. 60 



Huber, on cells of bees, i. 376 



, P., oa reason blended with in- 

 stinct, i. 347 



— — , on habitual nature of instincts, 

 i. 347 



, on slave-making ants, L 364 



, on Melipona domestica, i. 371 



Hudson, Mr., on the Ground-Wood- 

 pecker of La Plata, i. 247 



, on the Molothrus, i. 361 



Humble-bees, cells of, i. 370 



Hunter, J., on secondary sexual char- 

 acters, i. 211 



Hutton, Captain, on crossed geese, ii. 16 



Huxley, Prof., on structure of her- 

 maphrodites, i. 147 



, on the affinities of the Sirenia, 



ii. 115 



, on forms connecting birds and 



reptiles, ii. 116 



, on homologous organs, ii, 247 



, on the development of aphia, 



ii. 254 



Hybrids and mongrels compared, ii. 

 45 



Hybridism, ii. 7 



Hydra, structure of, i. 255-256 



Hymenoptera, fighting, i. 132 



Hymenopterous insect, diving, L 248 



Hyoseris, i. 297 



Ibla, i. 209 



Icebergs transporting seeds, ii. 157 

 Increase, geometrical ratio of, L 101 

 Individuals, numbers favorable to se- 

 lection, i. 148 



