INDEX. 



447 



Verlot, M., on double stocks, 227. 

 Vcnieul, M. dc. on the succession of 



species, ;J04. 

 Viola, email imperfect flowers of, 129. 



tricolor, 7!t. 

 Vlrcliow, on the structure of the crj-stal- 



line lens, l!>(). 

 Volcanic islands, denudnllon of. 270. 

 Vulture, naked skin on head, l!t2. 



Wadincr-birds, .3,'J.3. 



Wagner, Moriiz, on the importance of iso- 

 lation, 105. 

 on Cecidoniyia, .3M. 

 Wallace, Mr., on ori^'in of species, 17. 

 on the limit of variaiiou under do- 

 mestication, 50. 

 on laws of gcojjraphical distribution, 



32!t. 

 on the Malav .Vrchtpela^o, HOO. 

 on dimorj)hic Icpidopterji, 55, 2.30. 

 on races in the Malay Archipelago, 57. 

 on mimetic animals, 38(!. 

 Walsh. Mr. B. D., on phytophagic forms, 

 58. 

 on equable variability, 1.5ft. 

 Water, fresh, productions of, 351. 

 Water-hen, 177. 



Waterhouse, Mr., on Australian marsu- 

 pials, 113. 

 on LTcatly-developcd parts being vari- 

 able, 152. 

 on the cells of bees, 217. 

 on general afflnities, 387. 

 Water-ouzel, 177. 



Watson, Mr. II. C, on range of varieties 

 of British plants, 07. 

 on acclimatization, 111. 

 on tlora of Azores, .33.5. 

 on Alpine plants, 3.38. 

 on rarity of intermediate varieties, 

 170. 

 . on convergence, 132. 

 on the indefinite multiplication of 

 species, 132. 

 Weale, Mr., on locusts transportingseeds, 



;m. 



Web of feet in the water-birds, 177. 

 Weismann, Prof., on the causes of vari- 

 ability, 2.3. 



on morphological characters, 127. 



on nidiincntary organs, 408. 



West-Indian Islands, mammals of, .360. 

 Wcstwood, on species in large genera be- 

 ing closely allied to others, (iO. 

 on the tar^i of Kn-ridie, ].")7. 

 on the antenna; of hymeuopterous in- 

 sects, 375. 

 Wheat, varieties of. 111. 

 White Mountains, flora of, 337. 

 Whitlaker, Mr., on lines of escarpment, 



Wichura.Max. on hybrids, 250, 251, 261. 

 Wings, reduction of size, 140. 



of insects homologous with branchise, 



18;^. 

 nidimentarv, in insects, 405. 

 Wolf crossed w'ilh dog, 200. 



of Falkland Isles, 35!). 

 WoUaslon, Mr., ou varieties of insects, 

 58. 

 on fossil varieties of shells in Ma- 

 deira, 62. 



on colors of insects on sea-shore, 138, 

 on wingless beetles, 141. 

 on rarity of intermediate varieties 



170. 

 on insular insects. .3."5. 

 on land-shells of Madeira, naturalized 

 300. 

 Wolves, varieties of, 0.3. 

 Woodcock, with earth attached to leg, 3.35, 

 Woodpecker, habits of, 170. 



green color of, 102. 

 Woodward, Mr., on the duration of spe 

 citic forms, 279. 

 on the continuous succession of gen- 



era, 208. 

 on the succession of tyjies, 317. 

 World, sijccios changing simultaneously 



throughout. :j03. 

 Wrens, nest of, 232. 



Wyniaii, Prof., on correlation of color and 

 eft'ect of pcison, 20. 

 on the cells of the bee, 218. 



Yonatt, Mr., on selection, 41. 

 on sub-breeds of sheep, 44. 

 on rudimentary horns in young cat- 

 tle, 408. 



Zanthoxylon, 1,30. 

 Zebra, strii)e8 on, 102. 



TUE END. 



