528 



INDEX. 



Herbert W., on stmiggle for'exist- 

 ence, 58. 



, on sterility of hybrids, 281. 



Hermaphrodites crossing, 90. 



Heron eating seed, 409. 



Heron, Sir R., on peacocks, 82. 



Heusinger, on white animals poi- 

 soned by certain plants, 11. 



Hewitt, Mr., on sterility of first 

 crosses, 293. 



Hildebrand, Prof., on the self- 

 sterility of Corydalis, 281. 



Hilgendorf , on intermediate varie- 

 ties, 325. 



Himalaya, glaciers of, 395. 



, plants of, 398. 



Hippeastrum, 281. 



Hippocampus, 224. 



Hofmeister, Prof., on the move- 

 ments of plants, 234. 



Holly-trees, sexes of, 87. 



Hooker, Dr., on trees of New 

 Zealand, 93. 



' , on acclimatization of Hima- 

 layan trees, 134. 



Hooker, Dr., on flowers of um- 

 belliferse, 138. 



, on the position of ovules, 



204. 



, on glaciers of Himalaya, 



395. 



, on algse of New Zealand, 



399. 



, on vegetation at the base of 



the Hymalaya, 399. 



, on plants of Tierra del 



Fuego, 397. 



, on Australian plants, 398, 



'419. 



■- , on relations of flora of 



America, 401. 



• , on flora of the Antarctic 



lands, 403, 418. 



, on the plants of the Gala- 

 pagos, 412, 417. 



. on glaciers of the Lebanon, 



395. 



, on man not causing varia- 

 bility, 73, 



, on plants of mountains of 



Fernando, Po, 398. 



Hooks on palms, 188. 



on seeds, on islands, 413. 



Hopkins, Mr., on denudation, 



323. 

 Hornbill, remarkable instinct of, 



276. 

 Horns, rudimentary, 472. 

 Horse, fossil, in La Plata, 348. 

 , proportions of, when young, 



462. 

 Horses destroyed by flies in Para. 



guay, 67. 



, striped, 152. 



Horticulturists, selection applied 



by, 28. 

 Huber, on cells of bees, 264. 

 , P., on reason blended with 



instinct, 242. 

 , on habitual nature of in- 

 stincts, 243. 



, on slave-making ants, 255. 



-, on Melipona domestica, 260. 



Hudson, Mr., on the Ground- 

 Woodpecker of La Plata, 168. 



, on the Molothrus, 253. 



Humble-bees, cells of, 260. 



Hunter, J., on secondary sexual 

 characters, 142. 



Hutton, Captain, on crossed 

 geese, 283. 



Huxley, Prof. , on structure ^ of 

 hermaphrodites, 93. 



, on the affinities of the 



Sirenia, 357. 



, on forms connecting birds 



and reptiles, 357. 



, on homologous organs, 455. 



, on the development oi 



aphis, 460. 



Hybrids and mongrels compared. 

 305. 



Hybridism, 277. 



Hydra, structure of, 175. 



Hymenoptera, fighting, 82. 



Hymenopterous insect, diving, 

 169. 



Hyoseris, 205. 



Ibla, 140. 



Icebergs transporting seeds, 387. 



Increase, rate of, 60. 



