436 



INDEX. 



\ng pliimn^o of the male, il. SO, 93 ; fe- 

 iniilo, rejecting the unaQorued male, ii. 

 115. 



■V\'ii><)ws anil widowers, mortjilitv of. i. 170. 



"W'niKoN, pairing with a iiijitaii duck, il. 

 109. 



"WiLCKF.NS, Dr., on the modifleation of do- 

 mestic anhiials in inountiiinous refrions, 

 1. IIG; on a niinierieal relation between 

 the hairs and excretory pores in sheep, 

 1. 289. 



WiLUKK, Dr. Burt, on the greater fre- 

 quency of siipernunierarj' digits in men 

 than in women, i. 2t)T. 



Williams, on the marriage-customs of the 

 Fijians, ii. 857. 



"Wilson, Dr.. on the conical heads of the 

 natives of Northwestern America, ii. *J5; 

 on the Fijians, ii. 8;35; on the persLstence 

 of the fashion of comprossing the skull, 

 ii. 836. 



W'iNo-sprRs, ii. 155. 



WiNfis, differences of. in the two sc.xcs of 

 buttirHies and ll\ iiuiiciiilini, i. 835; 

 play of, in the courtship of birds, ii. !>!. 



"WiNTKR, change of color of mammals in, 

 ii. 2S4. 



"WiTnicRAFT, i. 66. 



Wives, traces of the forcible capture o£ L 

 175. 



Wolf, \vintcr change of the, ii. 2S4. 



Wolff, on the variability of the viscera in 

 man, i. 105. 



WoLLASTON, T. v., on Eiirygnathuft, 1. 

 834; on musical curculionidie, i. 866 ; on 

 the stridulation oi Actilhn, i. 872. 



WoLVKS learning to bark from dogs, i. 42; 

 hunting in packs, i. 72. 



WoLVFXs. black, ii. 2S0. 



Wo.MBAT, black varieties of the, ii. 2S0. 



Women distinguislied from men i)y male 

 monkevs, i. 13 ; preponderance of, in 

 numbers, i. 292 ; effects of seU'Ction ot, 

 in aceordaiK-e with different standards 

 of beauty, ii. .S:i9 ; jiractiee of capturing, 

 ii. 344. .'Us ; early betrothals and slavery 

 of. ii. 85(1; selection ot; for beauty, u. 

 8.56 ; 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 buttertlies, i. .835. 



WoOLNER, Mr., observations on the e^r in 

 man, i. 22. 



Wood, .1., on muscular variations in man, 

 i. 105, 12.3. 124 ; on the greater variability 

 of the muscles in men tlian in women, 1 

 266. 



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

 tip butleitly. 1. 3^1 ; ,,n the habits of the 

 Saturniida'. i. 3N^; on the habits of J/e- 

 nura Albert i, ii. 53; on Tetrao cupklo, 

 ii. .53 ; on the display of plumage by male 

 Jihea.sants. ii. 85 ; on the ocellated spots 

 of the Argus iiheas.nnt, ii. 1.3S; on the 

 habits of the female (."as.'sowary. ii. 195. 



WooiicooK, coloration of the, ii.'2I6. 



WoiiorEi-KER, selection of u mate by the 

 female, Ii. 111. 



WooDPErKERS. il. .%3; tapping of Ii. .59; 

 colors and nidllication or the, ii. 1(W, 166, 

 214; characters of young, ii. 177, 190. 2(MJ. 



Worm ALU. Mr., on the coloration oiilijpo- 

 l>!/iii. i. 8s4. 



Wor.SDs. healing o£ i. 13. 



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



Wriuht, C. a., on the young of Orocetet 

 and J'etrocincki, ii. 210. 



WRKiiiT, Chaimcey, on correlative acquisi- 

 tion, ii. 819; on the enlargement of the 

 brain in man, ii. 873. 



Wrkmit, 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. 



AVeiciit. W. von, on the protective plu- 

 mage of the Ptarmigan, ii. 78. 



Writino, i. 17.5. 



Wyman, Prof, on the prolongation of the 

 coccy.x in the human embiyo. i. 16; on 

 the condition of the great-tt>o in the hu- 

 man embrj'o, i. 17; on variation in the 

 skulls of tlie natives of the Sandwich 

 Islands, i. 104; on the hatching of the 

 eggs in the mouths and branchial ca\itie8 

 of male tishes, L 202 ; ii. 19. 



XENARciirs, on the Cicadm, i. 840. 



Xeiiorltinich M.v. se.vual difference in the col- 

 or (if tlie i'ves in, ii. 123. 



A'ij'/ioji/)i>riiJi /fel/erii, peculiar anal fin of 

 the male. ii. 9. 10. 



Xylocopa, difference of the sexes in, L 354. 



Y. 



Tarreli., W., on the habits of the Cyprl- 

 nida>, i. 300; on Itaia cl<tra<a. 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 .<;pawning of 

 the salmon, ii. 18; on the incubation of 

 tlie Lophobranchii, ii. 20; on rivalry in 

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

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

 tida". ii. 81 ; on an instance of reasoning 

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

 waders, ii. 208. 



Yellow fever, immunity of negroes and 

 inulattoes from, i. 234. 



You ATT, Mr., on the development of the 

 horns in cattle, i. 280. 



YfRA-0ABA8, their notioDB of beauty, il. 

 831. 



Z. 



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



281 ; stripes of the, ii. 2S3. 

 ZEitrs, humps of ii. 271. 

 ZiuzAUS, prevalence of as ornaments, i. 224. 

 ZiNCKE. Mr., on Kuropeau emigration to 



America, i. 172. 

 Zi>oUh-<i riripara^ sexual difference in the 



color of, il. 34. 

 ZYQ.SNUJE:, coloration of tbe^ t. 3S3. 



