492 



INDEX. 



Gartner, on reciprocal crosses, 263. 

 on crossed maize and verbascum, 



285. 

 on comparison of hybrids and 

 mongrels, 287, 288. 

 Gaudry, Prof., on intermediate 

 genera of fossil mammals in 

 Attica. 335. 

 Geese, fertility when crossed, 266. 



upland, 159. 

 Geikie, Mr., on subaerial denuda- 

 tion, 296. 

 Genealogy, important in classifi- 

 cation, 403. 

 Generations, alternate, 428. 

 Geographical distribution, 350. 

 Geography, ancient, 472. 

 Geology, future progress of, 472. 



imperfection of the record, 472. 

 Gervais, Prof., on Typotherium, 



335. 

 Giraffe, tail of, 175. 

 structure of, 197. 

 Glacial period, 365. 

 affecting the North and South, 



371. 



Glands, mammary, 210. 



Gmelin, on distribution, 366. 



God win- Austen, Mr., on the Malay 



Archipelago, 311. 

 Goethe, on compensation of 



growth, 131. 

 Gomphia, 194. 

 Gooseberry, grafts of, 272. 

 Gould, Dr. Aug. A., on land shells, 



391. 

 Gould, Mr., on colors of birds, 120. 

 on instincts of cuckoo, 237. 

 on distribution of genera of birds, 

 396. 

 Gourds, crossed, 285. 

 Graba, on the Uria lacrymas, 80. 

 Grafting, capacity of, 271, 272. 

 Granite, areas of denuded, 304„ 

 Grasses, varieties of, 97. 

 Gray, Dr. Asa, on the variability 

 of oaks, 45. 

 on man not causing variability, 



69. 

 on sexes of the holly, 82. 

 on trees of the United States, 



87. 

 on naturalized plants in the 



United States, 99. 

 on aestivation, 194. 



Gray, Dr. Asa, on rarity of inter 



mediate varieties, 152. 



on Alpine plants, 366. 

 Grav, Dr. J. E., on striped mule, 



"143. 

 Grebe, 159. 

 Grimm, on asexual reproduction, 



428. 

 Groups, aberrant, 419. 

 Grouse, colors of, 74. 



red, a doubtful species, 43. 

 Growth, compensation of, 131. 

 Giinther, Dr., on flat-fish, 208. 



on prehensile tails, 210. 



on the fishes of Panama, 351. 



on the range of fresh-watej 

 fishes, 381. 



on the limbs of Lepidosiren, 441. 



Haast, Dr., on glaciers of Ne\r 



Zealand, 371. 

 Habit, effect of, under domesti- 

 cation, 10. 

 effect of, under nature, 121. 

 diversified, of same species, 



155. 

 Hackel, Prof., on classificatiom and 



the lines of descent, 422. 

 Hair and teeth, correlated, 129. 

 Halitherium, 335. 

 Harcourt, Mr. E. V., on the birds 



of Madeira, 386. 

 Hartung, M., on bowlders in the 



Azores, 364. 

 Hazel-nuts, 360. 

 Hearne, on habits of bears, 158. 

 Heath, changes in vegetation, 62. 

 Hector, Dr., on glaciers of Nevr 



Zealand, 371. 

 Heer, Oswald, on ancient culfci* 



vated plaints, 15. 

 on plants of Madeira, 92. 

 Helianthemum, 194. 

 Helix pomatia, 391. 



resisting salt water, 391. 

 Helmholtz, M., on the imperfection 



of the human eye, 182. 

 Helosciadium, 360. 

 Hemlonus, striped, 145. 

 Hensen, Dr., on the eyes of 



Cephalopods, 169. 

 Herbert, W., on struggle for exist/ 



ence, 55. 

 on sterility of hybrids, 263. 

 Hermaphrodites crossing, 84. 



