1 ?I D E X. 



A. 



*bhot, C, on the battles of seals, 

 500. 



Abductor of the fifth metatarsal, 

 presence of, in man, 42. 



A-bercrombie, Dr., on disease of the 

 brain affecting speech, 88. 



Abipones, marriage customs of the, 

 598. 



Abou-Simbel, caves of, 168. 



Abortion, prevalence of the practice 

 of, 46. 



Abstraction, power of, in animals, 83. 



AcalieSf stridulation of, 306. 



Acanthodactylus capensis, sexual dif- 

 ferences of colour in, 357. 



Accentor modularise 473. 



Acclimatisation, difference of, in dif- 

 ferent races of men, 167. 



Achetidae, stridulation of the, 282, 

 283, 285 ; rudimentary striduiating 

 organs in female, 288. 



Acilius sulcatus, elytra of the female, 

 276, 



Acomus, development of spurs in the 

 female of, 450. 



Acridiidse stridulation of the, 282, 

 286 ; rudimentary striduiating or- 

 gans in female, 288, 



Acromio-basilar muscle, and quad- 

 rupedal gait, 42, 



Acting, 178. 



ActinicB, bright colours of, 260. 



Adams, Mr., migration of birds, 108 ; 

 intelligence of nut-hatch, 418; on 

 the Bonthi/ciUa carolinensis, 461. 



Admiral butterfl)'', 312. 



Adoption of the young of other ani- 

 mals by female monkeys, 70. 



Advancement m the orgimic scale. 

 Von Baer's dofiuition of, 164. 



Aeby, on the diifereuce between the 



skulls of man and the quadrumaiio, 

 149. 



jEsthetic faculty, not highly deve- 

 loped in savages, 93. 



Affection, maternal, 70 ; manifestation 

 of, by animals, 70 ; parental and 

 filial, partly the result of natural 

 selection, 105 ; mutual, of birds, 

 410; shewn by birds in confine- 

 ment, for certain persons, 411. 



Africa, probably the birthplace of 

 man, 155; South, crossed popula- 

 tion of, 174 ; South, retention of 

 colour by the Dutch in, 193 ; South, 

 proportion of the sexes in the but- 

 terflies of, 250 ; tattooing practised 

 in, 574 ; Northern, coiffure of 

 natives of, 575, 



Agassiz, L., on conscience in dogs, 

 103 ; on the coincidence of the 

 races of man with zoological pro- 

 vinces, 169 ; on the number of 

 species of man, 174; on the court- 

 ship of the land-snails, 262 ; on the 

 brightness of the colours of male 

 fishes during the breeding season, 

 340 ; on the frontal protuberance 

 of the males of Geophayus and 

 Cickla, 340, 345 ; male fishes 

 hatching ova in their mouths, 345 ; 

 sexual differences in colour of chro- 

 mids, 345 ; on the slight sexual 

 differences of the South Americans, 

 561 ; on the tattooing of the Ama« 

 zonian Indians, 576. 



Age, in relation to the transmissioi: 

 of characters in birds, 463 ; va- 

 riation in accordance with, in birds. 

 484. 



Agelceus phceniceus, 225, 416. 



Ageronia feronia, noise produced ! y 

 307. 



Agrion, dimorphism in. 29o 



