D 1 U U ,C ^ 



552 



INDEX 



Wagner, Moritz, on the importance 



of isolation, ii6 

 Wallace, Mr., on origin of species, 



21. 



, on the limit of variation un- 

 der domestication, 56. 

 -, on dimorphic lepidoptera, 61, 



29s 



, on races in the Malay Archi- 

 pelago, 63. 



, on the improvement of the 



eye, 193. 



on the walkmg-stick insect. 



236. 



■, on laws of geographical dis- 

 tribution, 402. 

 • , on the Malay Archipelago, 



437 



, on mimetic animals, 467. 



Walsh, Mr. B. D., on phytophagic 



forms, 64. 



, on equal variability, 168. 



Water, fresh, productions of, 427. 



Water-hen, 189. 



Waterhouse, Mr., on Australian 



marsupials, 126. 

 , on greatly developed parts 



being variable, 161. 



, on the cells of bees, 280. 



-, on general affinities, 468. 



Watson, Mr. H. C., on range of 

 varieties of British plants, 63, 74. 



, on acclimatisation, 153. 



, on flora of Azores, 410. 



, on Alpine plants, 413. 



, on rarity of intermediate va- 

 rieties, 182. 



, on convergence, 138. 



on the indefinite multiplica- 



tion of species, 139. 

 Weale, Mr., on locusts transporting 



seeds, 409. 

 Web of feet in water-birds, 190. 

 Weismann, Prof., on the causes of 



variability, 26. 



, on rudimentary organs, 493. 



West Indian Islands, mammals of, 



437- 

 Westwood, on species in large 



genera being closely allied to 



others, 73. 



, on the tarsi of Engids, 166. 



, on the antennse of hymenop- 



terous insects, 454. 

 Whales, 236. 

 Wheat, varieties of, 124. 



White Mountains, flora of, 412. 



Whitaker, Mr., on lines of escarp- 

 ment, 337. 



Wichura, Max, on hybrids, 315, 328. 



Wings, reduction of size, 148. 



of insects homologous with 



branchiae, 195. 

 -, rudimentary, in insects, 490. 



Wolf crossed with dog, 268. 



— ■ — ■ of Falkland Isles, 436. 



Wollaston, Mr., on varieties of in- 

 sects, 64. 



, on fossil varieties of shells in 



Madeira, 69. 



on colours of insects on sea- 



shore, 146. 



, on wingless beetles, 148, 149. 



, on rarity of intermediate va- 

 rieties, 182. 



, on insular insects, 432. 



on land-shells of Madeira 



naturalised, 443. 

 Wolves, varieties of, 103. 

 Woodcock with earth attached to 



leg, 409. 

 Woodpecker, habits of, 188. 



, green colour of, 207. 



Woodward, Mr., on the duration of 



specific forms, 347. 



; on Pyrgoma, 357. 



, on the continuous succession 



of genera, 367. 

 , on the succession of types, 



389. 



World, species changing simultane- 

 ously throughout, 374. 



Wrens, nest of, 296. 



Wright, Mr. Chauncey, on the 

 giraffe, 231. 



, on abrupt modifications, 260. 



Wyman, Prof., on correlation of 

 colour and effects of poison, 30. 



-, on the cells of the bee, 282. 



Youatt, Mr., on selection, 46. 



, on sub-breeds of sheep, 50. _ 



, on rudimentary horns in 



young cattle, 494. 



Zanthoxylon, 227. 

 Zebra, stripes on, 

 Zeuglodon, 379. 



171. 



