INDEX. 767 



Myriapoda, 310. 



Nageli, on the influence of natural selection on plants, 68; on the 

 gradation of species of plants, 199. 



Nails, colored yellow or purple in part of Africa, 655. 



Narwhal, tusks of the, 572, 578. 



Nasal cavities, large size of, in American aborigines, 38. 



Nascent organs, 12. 



Nathusius, H. von, on the improved breeds of pigs, 201 ; male 

 domesticated animals more variable than females, 252 ; horns of 

 castrated sheep, 577; on the breeding of domestic animals, 680. 



Natural selection, its effects on the early progenitors of man, 53; 

 influence of, on man, 67, 70 ; limitation of the principle, 68; in- 

 fluence of, on social animals, 70; Mr. Wallace on the limitation of, 

 by the influence of the mental faculties in man, 144; influence of, 

 in the progress of the United States, 161 ; in relation to sex, 292. 



Natural and sexual selection contrasted, 256. 



Naulette, jaw from, large size of the canines in, 46. 



Neanderthal skull, capacity of the, 61. 



Neck, proportion of, in soldiers and sailors, 36. 



Necrophoru8y stridulation of, 342, 345. 



Nectarinia, young of, 533. 



NectaHnim, moulting of the, 444; nidification of, 517. 



Negro, resemblance of a, to Europeans in mental characters, 203. 



Negro- women, their kindness to Mungo Park, 133. 



Negroes, Caucasian features in, 190; character of, 191; lice of, 193; 

 fertility of, when crossed with other races, 194; blackness of, 194, 

 197, variability of, 198, 199; immunity of, from yellow fever, 220; 

 difference of, from Americans, 224; disfigurements of the, 617; color 

 of new-born children of, 635; comparative beardlessness of, 639; 

 readily become musicians, 650; appreciation of beauty of their women 

 by, 659, 661; idea of beauty among, 664; compression of the nose by 

 some, 665. 



Nemertians, colors of, 299. 



Neolithic period, 164. 



NeomorpJia, sexual difference of the beak in, 408. 



Nephila, size of male, 309. 



Nests, made by fishes, 391; decoration of, by humming-birds, 469. 



Neumeister, on a change of color in pigeons after several moult- 

 ings, 269. 



Neuration, difference of, in the two sexes of some butterflies and 

 hymenoptera, 314. 



Neuroptera, 287, 327. 



Neurothemis, dimorphism in, 329. 



New Zealand, expectation by the natives of, of their extinction, 

 218; practice of tattooing in, 657; aversion of natives of, to hairs on 

 the face, 662; pretty girls engrossed by the chiefs in, 680. 



Newton, A., on the throat-pouch of the male bustard, 423; on the 

 difference between the females of two species of Oxynotus, 536; on 

 the habits of the Phalarope, dotterel and godwit, 544. 



Newts, 394. 



Nicholson, Dr., on the non-immunity of dark Europeans from 

 yellow fever, 222. 



Nictitating^ membrane, 19, 182. 



