INDEX. 



501 



Wallace, Mr , on races in the Malay 

 Archipelago, 42. 

 on the improvement of the eye, 



162. 

 on the walking-stick insect, 202. 

 on laws of geographical distribu- 

 tion, 356. 

 on the Malay Archipelago, 389. 

 on mimetic animals, 417. 

 Walsh, Mr. B. D., on phytophagic 

 forms, 43. 

 on equal variability, 141. 

 Water, fresh, productions of, 380. 

 Water-hen, 159. 



Waterhouse, Mr., on Australian 

 marsupials, 99. 

 on greatly developed parts being 



variable, 133. 

 on the cells of bees, 244. 

 on general affinities, 419. 

 Water-ouzel, 159. 



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

 eties of British plants, 41, 52. 

 on acclimatization, 126. 

 on flora of Azores, 364. 

 vi rarity ot intermediate varie- 

 ties, *52. 

 on alpine plants, 467. 

 on convergence, 113. 

 on the indefinite multiplication 

 of species, 114. 

 Weale, Mr., on locusts transporting 



seeds, 363. 

 Web of feet in water-birds, 160. 

 Weismann, Prof., on the causes of 

 variability, 7. 

 on rudimentary organs, 442. 

 West Indian Islands, mammals of, 



389. 

 West wood, on species in ^ large 

 genera being closely allied to 

 others, 51. 

 on the tarsi of Engidae, 139. 

 on the antenna? of hymenopter- 

 ous insects, 405. 

 Whales, 202. 

 Wheat, varieties of, 97. 

 White Mountains, flora of, 366. 

 Whittaker, Mr., on lines of escarp- 

 ment, 297, 



Wichura, Max, on hybrids, 276, 



278, 288. 

 Wings, reduction of size, 122. 

 of insects homologous with 



branchiae, 165. 

 rudimentary, in insects, 439. 

 Wolf, crossed with dog, 232. 



of Falkland Isles, 389. 

 Wollaston, Mr., on varieties of 

 insects, 42. 

 on fossil varieties of shells in '• 



Madeira. 47. 

 on colors of insects on sea-shore, 



120. 

 on wingless beetles, 122. 

 on rarity of intermediate varie- 

 ties, 152. 

 on insular insects, 384. 

 on land-shells of Madeira natur- 

 alized, 395. 

 Wolves, varieties of, 79. 

 Woodcock with earth attached to 



leg, 363. 

 Woodpecker, habits of, 158. 



green color of, 176. 

 Woodward, Mr., on the duration of 

 specific forms, 306. 

 on Pyrgoma, 314. 

 on the continuous succession of 



genera, 325. 

 on the succession of types, 344. 

 World, species changing simulta- 

 neously throughout, 330. 

 Wright, Mr. Chauncey, on the 

 giraffe, 198. 

 on abrupt modifications, 225. 

 Wrens, nest of, 259. 

 Wyman, Prof., on correlation oi 

 color and effects of poison, 10. 

 on the cells of the bee, 245. 



Youatt, Mr., on selection, 25. 

 on sub-breeds of sheep, 29. 

 on rudimentary horns in young 

 cattle, 443. 



Zanthoxylon, 193. 

 Zebra, stripes on, 143. 

 Z^dodon, 335. 



- *" 



