458 



WOI.LASTON. 



INDEX. 



Z2UGL0D0N. 



Wollaston, Mr., on varieties of in- 

 sects, 38. 



■ , on fossil varieties of shells in 



Madeira, 42. 



, on colours of insects on sea- 

 shore, 107. 



, on wingless beetles, 109. 



, on rarity of intermediate va- 

 rieties, 136. 



, on insular insects, 347. 



, on land-shells of Madeira, natu- 

 ralised, 357. 



Wolve3, varieties of, 71. 



Woodcock with earth attached to leg, 

 328. 



Woodpecker, habits of, 141. 



, green colour of, 158. 



Woodward, Mr., on the duration of 

 specific forms, 276. 



, on l'yrgoma, 284. 



, on the continuous succession of 



genera, 293. 



, on the succession of types, 311. 



World, species changing simuH-ice- 

 ously throughout, 297. 



Wrens, nest of, 234. 



Wright, Mr. Chauncey, on the giraffe, 

 178. 



, on abrupt modifications, 203. 



Wyman, Prof, on correlation of co- 

 lour and effects of poison, 9. 



, on the cells of the bee, 222. 



Y. 



Youatt, Mr., on selection, 23. 



, on sub-breeds of sheep, 26. 



, on rudimentary horns in young 



cattle, 400. 



Zanthoxylon, 174. 

 Zebra, stripes on, 128. 

 Zeuglodon, 302. 



THE END. 



LONDON : PRINTED BY WM. CLOWES AND SONS, LlJirTED, 

 STAMSOKD STISEET AXD CHAKING CliOSS. 



