VERREAUX. 
INDEX. 
WALLACE. 
471 
Yerreaux, M., on the attraction of 
numerous males by the female of 
an Australian Bombyx, i. 312. 
Vertebra, caudal, number of, in 
macaques and baboons, i. 150 ; of 
monkeys, partly imbedded in the 
body, i. 151. 
Yertebrata, ii. 1 ; common origin 
of the, i. 203 ; most ancient pro- 
genitors of, i. 212 ; origin of the 
voice in air-breathing, ii. 331. 
Vesicula prostatica^ the homologue of 
the uterus, i. 31, 208. 
Yibriss^, represented by long hairs 
in the eyebrows, i. 25. 
Vidua^ ii. 181. 
Vidua axillaris, i. 269. 
Yillerme, M., on the influence of 
plenty upon stature, i. 115. 
Yinsox, Aug., on the male of Epeira 
nigra, i. 338. 
Yiper, difference of the sexes in the, 
ii. 29. 
Yirey, on the number of species of 
man, i. 226. 
Yirtues, originally social only, i. 93 ; 
gradual appreciation of, i. 165. 
Yiscera, variability of, in man, i. 
109. 
Yiti Archipelago, population of the, 
i. 225. 
Ylacovich, Prof., on the ischio-pubic 
muscle, i. 127. • 
Yocal music of birds, ii. 51. 
Yocal organs of man, i. 58 ; of birds, 
i. 59 ; ii. 163 ; of frogs, ii. 28 ; of 
the Insessores, ii. 55 ; difference of, 
in the sexes of birds, ii. 56 ; pri- 
marily used in relation to the pro- 
pagation of the species, ii. 330. 
Yogt, Carl, on the origin of species, 
i. 1 ; on the origin of man, i. 4 ; on 
the semilunar fold in man, i. 23 ; 
on the imitative faculties of micro- 
cephalous idiots, i. 57 ; on micro- 
' cephalous idiots, i. 121 ; on skulls 
from Brazilian caves, i. 218 ; on 
^ the evolution of the races of man, 
i. 230 ; on the formation of the 
skull in women, ii. 317 ; on the 
Ainos and negroes, ii. 321 ; on the 
increased cranial difference of the 
sexes in man with race-develop- 
ment, ii. 329 ; on the obliquity of 
the eye in the Chinese and Japanese, 
ii. 344. 
Yoice in mammals, ii. 274; in mon- 
keys and man, ii. 319; in man, ii. 
330 ; origin of, in air-breathing 
vertebrates, ii. 331. 
Yon Baer, definition of advancement 
in the organic scale, i. 211. 
Yulpian, Prof., on the resemblance 
between the brains of man and of 
the higher apes, i. 11. 
Yultures, selection of a mate by 
the female, ii. 116 ; colours of, ii. 
229. 
W. 
Waders, young of, ii. 217. 
Wagner, K., on the occurrence of the 
diastema in a Kaffir skull, i. 126 ; 
on the bronchi of the black stork, 
ii. 60. 
Wagtail, Pay’s, arrival of the male 
before the female, i. 260. 
Wagtails, Indian, young of, ii. 190. 
Waist, proportions of, in soldiers and 
sailors, i. 117. 
Waitz, Prof., on the number of spe- 
cies of man, i. 226 ; on the colour 
of Australian infants, ii. 318 ; on 
the beardlessness of negroes, ii. 
321 ; on the fondness of mankind 
for ornaments, ii. 338 ; on the 
liability of negroes to tropical 
fevers after residence in a cold 
climate, i. 243 ; on negro ideas of 
female beauty, ii. 346 ; on Javanese 
and Cochin Chinese ideas of beauty, 
ii. 347. 
Walckenaer and Gervais, on the 
Myriapoda, i. 340. 
Waldeyer, M., on the hermaphro- 
ditism of the vertebrate embryo, i. 
207. 
Wales, North, numerical proportion 
of male and female births in, i. 
301. 
Walker, Alex., on the large size of 
the hands of labourers’ children, 
i. 117. 
Walker, F., on sexual differences in 
the diptera, i. 348. 
Wallace, Dr. A., on the prehensile 
