INDEX. 751 



Hookhain, Mr., on mental concepts in animals, 94. 



Iloolock Gibbon, nose of, 171. 



Hoopoe, 421; sounds produced by male, 427. 



JJoplopterua armatuts, wing-spurs of, 414. 



Hornbill, African, inflation of the neck-wattle of tlie mi.le during 

 courtship. -435. 



Hornbills, sexual difference in the color of the eyes in. 483; nidfica- 

 tion and incubation of, 516. 



Home, C., on the rejection of a brightly colored locust by lizards 

 and birds, 428. 



Horns, sexual differences of, in slieep and goats, 260. loss of. ir 

 female merino sheep, 261 ; development of, in deer, 264 ; devel- 

 opment in antelopes, 265. irom the htad and thorax, in male beetles, 

 386; of deer, 573, 577, 587; originally a masculine character in sheep, 

 576, and canine teeth, inversed development of, 586. 



Horse, fossil, extinction 01 the, in South America. 218; polygamous, 

 246; canine teeth of male, 572; winter change of color. 619. 



Horses, rapid increase of, in South America, 58; diminution of 

 canine teeth in, 60 ; dreaming. 84 ; of the Falkland Islands and 

 Pampas. 206; numerical proportion of the sexes in, 244, 245: lighter 

 in winter in Siberia, 260; sexual preferences in, 598; pairing preferently 

 with those of the same color 617; numerical proportion of male and 

 female births in, 278; formerly striped, 626. 



Hottentot women, peculiarities of, 198. 



Hottentots, lice of, 192; readily become musicians, 650: notions <_ 

 female beauty of the, 660; compression of nose by, 665. 



Hough, Dr. S., men's temperature more variable than women's, 

 253, proportion of sexes in man, 274. 



House slaves, difference of, from field-slaves, 224. 



Houzeau, on the baying of the dog, 84; on reason in dogs, 84; 

 birds killed by telegraph wires, 90; on the cries of domestic fowls 

 and parrots, 96, 99; animals feel no pity, 116; suicide in the Aleutian 

 islands, 133. 



Howorth, H. H., extinction of savages, 209. 



Huber, P., on ants playing together, 77; on memory in ants, 83; 

 on the intercommunication of ants, 101; on the recognition of each 

 other by ants after separation, 331. 



Hue, on Chinese opinions of the appearance of Europeans, 659. 



Huia, the, of New Zealand, 236. 



Human, man classed alone in a, kingdom, 167; sacrifices, 108. 



Humanity, unknown among some savages, 133 ; deficiency of, 

 among savages, 139. 



Humboldt, A. von, on the rationality of mules, 88; on a parrot 

 preserving the language of a lost tribe. 206; on the cosmetic arts of 

 savages, 654; on the exaggeration of natural characters by man, 664, 

 on the red painting of American Indians, 665. 



Hume, D., on sympathetic feelings, 123. 



Humming-bird, racket-shaped feathers in the tail of a, 436; dis 

 play of plumage by the male, 447. 



Humming-birds, ornament their nests, 104, 469; polygamous, 248; 

 proportion of the sexes in, 231, 555; sexual differences in. 408, 503; 

 pugnacity of male, 409; modified primaries of male, 429; coloration 

 of the sexes of, 440; display by, 503; nidification of the, 516, 517; 

 colors of female, 516; young of, 555. 



