WONDER. 



INDEX. 



ZYG^NID^. 



475 



ii. 372 ; freedom of selection by, 

 in savage tribes, ii. 372. 



Wonder, manifestations of, by ani- 

 mals, i. 42. 



WONFOR, Mr., on sexual peculiarities 

 in the wings of butterflies, i. 345. 



WoOLXER, Mr., observations on the 



ear in man, i. 22. 



Wood, J., on muscular variations in 

 man, i. 109, 128, 129; on the 

 greater variability of the muscles 

 in men than in women, i. 275. 



Wood, T. W., on the colouring of the 

 orange-tip butterfly, i. 394; on 

 the habits of the Saturniidae, i. 

 398 ; on the habits of Menura 

 Alherti, ii. 56 ; on Tetrao cupido, 

 ii. 56 ; on the display of plumage 

 by male pheasants, ii. 89 ; on the 

 ocellated spots of the Argus phea- 

 sant, ii. 144 ; on the habits of the 

 female Cassowary, ii. 204. 



Woodcock, coloration of the, ii. 



OQfi 



Woodpecker, selection of a mate by 

 the female, ii. 116. 



Woodpeckers, ii. 56 ; tapping of, 

 ii. 62 ; colours and nidification of 

 the, ii. 171, 174, 223 ; characters 

 of young, ii. 185, 199, 209. 



Wormald, Mr., on the coloration of 

 Hypopyra, i. 397. 



Wounds, healing of, i. 13. 



Wren, ii. 198 ; young of the, ii. 209. 



Wright, C. A., on the young of 

 Orocetes and Petrocincla, ii. 220. 



Wright, Chauncey, on correlative 

 acquisition, ii. 335 ; on the enlarge- 

 ment of the brain in man, ii. 391. 



Wright, Mr., on the Scotch deer- 

 hound, ii. 261 ; on sexual preference 

 in dogs, ii. 271 ; on the rejection of 

 a horse by a mare, ii. 272. 



Wright, W. von. on the protective 

 plumage of the Ptarmigan, ii. 81. 



Writing, i. 182. 



Wyman, Prof, on the prolongation of 

 the coccyx in the human embryo, 

 i. 16 ; on the condition of the great 

 toe in the human embryo, i. 17 ; on 



variation in the skulls of the natives 

 of the Sandwich Islands, i. 108 ; on 

 the hatching of the eo-ors in the 

 mouths and branchial cavities of 

 male fishes, i. 210, ii. 20. 



X. 



Xenarchus, on the Cicadse, i. 350. 

 Xenorhynchiis, sexual difference in the 



colour of the eyes in, ii. 129. 

 Xiphophorus Hellerii, peculiar anal fin 



of the male, ii. 9, 10. 

 Xylocopa, difterence of the sexes in. i. 



366. 



Y. 



Yarrell, W., on the habits of the 

 Cyprinidse, i. 309 ; on Raia clavata, 

 ii. 2 ; on the charactei's of the male 

 salmon during the breeding season, 

 ii. 4, 14 ; on the characters of the 

 rays, ii. 6 ; on the gemmeous drago- 

 net, ii. 8 ; on the spawning of the 

 salmon, ii. 19 ; on the incubation of 

 the Lophobranchii, ii. 21 ; on rivalry 

 in song-birds, ii. 53 ; on the trachea 

 of the swan, ii. 60 ; on the moulting 

 of the anatidse, ii. 85 ; on an in- 

 stance of reasoning in a gull, ii. 108 ; 

 on the young of the waders, ii. 217. 



Yellow fever, immunity of negroes 

 and mulattoes from, i. 243. 



YouATT, Mr., on the development of 

 the horns in cattle, i. 284. 



YuRA-CARAS, their notions of beauty, 

 ii. 347. 



Z. 



Zebra, rejection of an ass by a female, 



ii. 295 ; stripes of the, ii. 302. 

 Zebus, humps of, i. 284. 

 Zigzags, prevalence of, as ornaments, 



i. 233. 

 Zincke, Mr., on European emigration 



to America, i. 179. 

 Zootoca vivipara, sexual difference in 



the colour of, ii. 36. 

 Zyg^nid^, coloration of the, i. 396. 



THE END. 



