1o* 



ON THE ORIGIN OF SPECIES 



Wading-birds, 347. 

 Wallace, Mr., on origin of species, 

 1. 



on law of geographical dis- 

 tribution, 319. 



on the Malay Archipelago, 



355. 

 Wasp, sting of, 182. 

 Water, fresh, productions of, 344. 

 Water-hen, 167. 

 Waterhouse, Mr., on Australian 



marsupials, 105. 



on greatly developed parts 



being variable, 136. 



on the cells of bees, 202. 



on general affinities, 386. 



Water-ouzel, 166. 



Watson, Mr. H. C, on range of 

 varieties of British plants, 58. 



on acclimatisation, 127. 



on flora of A2ores, 826. 



on Alpine plants, 330, 838. 



on rarity of intermediate 



varieties, 158. 



Weald, denudation of, 256. 

 Web of feet in water-birds, 166. 

 West Indian islands, mammals of, 



354. 

 Westwood on species in large 



genera being closely allied to 



others, 52. 



on the tarsi of Engidse, 142. 



— — on the antennae of hymen- 



opterous insects, 874. 

 Wheat, varieties of, 103. 

 White Mountains, flora of, 328. 

 Wings, reduction of size, 122. 



Wings of insects homologous with 

 branchiae, 172. 



rudimentary, in insects, 



405. 



Wolf crossed with dog, 192. 



of Falkland Isles, 353. 



Wollaston, Mr., on varieties of 



insects, 45. 



on fossil varieties of land- 

 shells in Madeira, 48. 



on colours of insects on sea- 

 shore, 120. 



on wingless beetles, 123. 



on rarity of intermediate 



varieties, 158. 



on insular insects, 849. 



on land-shells of Madeira, 



naturalised, 361. 



Wolves, varieties of, 83. 

 Woodpecker, habits of, 166. 



green colour of, 177. 



Woodward, Mr., on the duration 



of specific forms, 268. 



on the continuous succession 



of genera, 284. 



on the succession of types, 



304. 



World, species changing simul- 

 taneously throughout, 289. 

 Wrens, nest of, 218. 



Youatt, Mr., on selection, 28. 



on sub-breeds of sheep, S3. 



on rudimentary horns in 



young cattle, 408. 



Zebra, stripes on, 147. 



THE END 



