436 



INDEX. 



ing plumage of the male, ii. 80, 93 ; fe- 

 male, rejecting the unadorned male, ii. 

 115. 



Widows and widowers, mortality of, i. 170. 



Wigeon, pairing with a pintail duck, ii. 

 109. 



Wil<;kens v Dr., on the modification of do- 

 mestic animals in mountainous regions, 

 i. 116; on a numerical relation between 

 the hairs and excretory pores in sheep, 

 i. '239. 



Wildee, Dr. Burt, on the greater fre- 

 quency of supernumerary digits in men 

 than in women, i. 26T. 



Williams, on the marriage-customs of the 

 Fijians, ii. 357. 



Wilson, Dr.. on the conical heads of the 

 natives of Northwestern America, ii. 335 ; 

 on the Fijians, ii. 335; on the persistence 

 of the fashion of compressing the skull, 

 ii. 336. 



Wing-spurs, ii. 155. 



Wings, differences of, in the two sexes of 

 butterflies and Hymenoptera, i. 835 ; 

 play of, in the courtship of birds, ii. 91. 



Winter, chang# of color of mammals in, 

 ii. 284. 



Witchcraft, i. 66. 



Wives, traces of the forcible capture of, i. 

 175. 



Wolf, winter change of the, ii. 2S4. 



Wolff, on the variability of the viscera in 

 man, i. 105. 



Wollaston, T. V., on Eurygnathus, i. 

 334 ; on musical curculionida?, i. 366 ; on 

 the stridulation of Acalles, i. 372. 



Wolves learning to bark from dogs, i. 42 ; 

 hunting in packs, i. 72. 



Wolves, black, ii. 280. 



Wombat, black varieties of the, ii. 2S0. 



Women distinguished from men by male 

 monkeys, i. 13 ; preponderance of, in 

 numbers, i. 292 ; effects of selection of, 

 in accordance with different standards 

 of beauty, ii. 339; practice of capturing, 

 ii. 344, 34S ; early betrothals and slavery 

 of, ii. 350; selection of, for beauty, ii. 

 856 ; freedom of selection by, in savage 

 tribes, ii. 356. 



Wonder, manifestations of, by animals, i.41. 



Wonfor, Mr., on sexual peculiarities in the 

 wings of butterflies, i. 335. 



Woolner, Mr., observations on the ear in 

 man, i. 22. 



Wood, J., on muscular variations in man, 

 i. 105, 123, 124 ; on the greater variability 

 of the muscles in men than in women, i. 

 266. 



Wood, T. W., on the coloring of the orange- 

 tip butterfly, i. 381 ; on the habits of the 

 baturniidte, i. 385; on the habits of Me- 

 n ura Alberti, ii. 53 ; on Tetrao cupido, 

 ii. 53 ; on the display of plumage by male 

 pheasants, ii. 85 ; on the ocellated spots 

 of the Argus pheasant, ii. 188; on the 

 habits of the female Cassowary, ii. 195. 



Woodcock, coloration of the, ii. 216. 

 Woodpecker, selection of a mate by the 

 female, ii. 111. 



Woodpeckers, ii. 53; tapping of, ii. 59; 

 colors and nidification of the, ii. 163, 166, 

 214; characters of young, ii. 177, 190. 200. 



Wormald, Mr., on the coloration of Hypo 

 pyra, i. 384. 



Wounds, healing of i. 13. 



Wren, ii. 1S9 ; young of the, ii. 200. 



Wright, C. A., on the young of Orocetes 

 and Petrocincla, ii. 210. 



Wright, Chauncey, on correlative acquisi- 

 tion, ii. 319 ; on the enlargement of tho 

 brain in man, ii. 373. 



Wright, Mr., on the Scotch deerhound. ii. 

 250 ; on sexual preference in dogs, ii. 259 ; 

 on the rejection of a horse by a mare, ii. 

 260. 



Wright, W. von, on the protective plu- 

 mage of the Ptarmigan, ii. 78. 



Writing, i. 175. 



Wyman, Prof., on the prolongation of the 

 coccyx in the human embryo, i. 16; on 

 the condition of the great-toe in the hu- 

 man embryo, i. 17; on variation in the 

 skulls of the natives of the Sandwich 

 Islands, i. 104; on the hatching of the 

 eggs in the mouths and branchial cavities 

 of male fishes, i. 202 ; ii. 19. 



Xenarchus, on the Cicada?, i. 340. 



XenorJiynchus, Bexual difference in the col- 

 or of the eyes in, ii. 123. 



Xiphopltonis Jlelterii, peculiar anal fin of 

 the male, ii. 9, 10. 



Xylocopa, difference of the sexes in, i. 854. 



Y. 



Tarrell, W., on the habits of the Cypri- 

 nida?, i. 300 ; on Itaia clavata, ii. 2 ; on 

 the characters of the male salmon during 

 the breeding-season, ii. 4, 14 ; on the char- 

 acters of the rays, ii. 6 ; on the gemme- 

 ous dragonet, ii. 8 ; on the spawning of 

 the salmon, ii. 18; on the incubation of 

 the Lophobranchii, ii. 20; on rivalry in 

 song-birds, ii. 50 ; on the trachea of the 

 swan, ii. 57 ; on the moulting of the ana- 

 tidae, ii. SI ; on an instance of reasoning 

 in a gull. ii. 104; on the young of the 

 waders, ii. 208. 



Yellow fever, immunity of negroes and 

 mulattoes from, i. 234. 



Youatt, Mr., on the development of the 

 horns in cattle, i. 2S0. 



Yura-caras, their notions Df beauty, ii. 

 831. 



Z. 



Zebra, rejection of an ass by a female, ii. 



2S1 ; stripes of the, ii. 2S8. 

 Zebus, humps of, ii. 271. 

 Zigzags, prevalence of, as ornaments, i. 224. 

 Zincke, Mr., on European emigration to 



America, i. 172. 

 Zootoca vivipara. sexual difference in the 



color of, ii. 34. 

 Zygjsnid^:, coloration of the, i. 8S3. 



