858 



INDEX 



l^tecies, canaes of the advcmcement 

 of, 183; dlsthiotive characters of, 

 222; oriaoes of man, 234; sterility 

 and fertiUty of, when crossed, 228; 

 supposed, of man, 232; gradation 

 of, 232; diffloolty of defining, 233; 

 representative, of birds, 604; of 

 birds, comparative differences be- 

 tween the sexes of distinct, 606. 



Spectrum femoratum, difference of color 

 in the sexes of, 380, 



Speech, coimection between the brain 

 and the faculty of, 123; connection 

 of intonation with music, 736-737. 



"Spel" of the black-cock, 486. 



Spencer, Herbert, on the influence of 

 food on the size of the jaws, 55 ; on 

 the dawn of intelligence, 97 ; on the 

 origin of the belief in spiritual agen- 

 cies, 132 ; on the origin of the moral 

 sense, 167 ; ou music, 737. 



Spengel, disagrees with explanation of 

 man's hairlessness, 775. 



Sperm-whales, battles of male, 647. 



Sphingidae, coloration of the, 410. 



Sphinx, Humming-bird, 413. 



, Mr. Bates on the caterpillar of 



a, 424. 



moth, musky odor of, 402. 



Spiders, 358 ; parental feeling in, 145 ; 

 male, more aciive than female, 292 ; 

 proportion of the sexes in, 337 ; sec- 

 ondary sexual characters of, 359; 

 courtship of male, 359 ; attracted by 

 music, 361 ; male, small size of, 360. 



Spilosoma menthastri, rejected by tur- 

 keys, 412. 



Spine, alteration of, to suit the erect 

 attitude of man, 78. 



Spirits, fondness of monkeys for, 24. 



Spiritual agencies, beUef in, almost uni- 

 versal, 131. 



Spiza cyanea and civis, 532. 



Spoonbill, 485; Chinese, change of 

 plumage in, 594. 



Spots, retained throughout groups of 

 birds, 503 ; disappearance of, in adult 

 mammals, 705. 



Sprengel, C. K., on the sexuality of 

 plants, 281. 



Spring-hoc, horns of the, 657. 



Sproat, Mr., on the extinction of sav- 

 ages in Vancouver Island, 240; on 

 the eradication of facial hair by the 

 natives of Tanconver Island, 747 ; 



on the eradication of the beard by 

 the Indiana of Vancouver Islaa4> 

 776. 



Spars, occurrence of, in female fowla^ 

 300, 304; development of, hi vari- 

 ous species of Phasianidse, 310; of 

 Gallinaceous birds, 471-472; devel- 

 opment of, in female Gallinaoeee, 579. 



Sqnilla, different colors of the sexes of 

 a species of, 357. 



Squirrels, battles of males, 646; Afri- 

 can, sexual differences in the color- 

 ing of, 689 ; black, 697. 



Stag, long hairs of the throat of, 673; 

 horns of the, 299-302; battles of, 

 647; horns of the, with numerom 

 branches, 659; bellowing of the, 

 679; crest of the, 686. 



-beetle, numerical proportion of 



sexes of, 336; large size of male, 

 367; weapons of the male, 392. 



Stainton, H. T., on the numerical pro- 

 portion of the sexes in the smaller 

 moths, 331; habits of Blachista ru- 

 focinerea, 332 ; on the coloration of 

 moths, 410; on the rejection of Spi- 

 losoma menthastri, by turkeys, 412; 

 on the sexes of Agrotis exclama- 

 tionis, 413. 



Staley, Bishop, mortality of infant 

 Maories, 248. 



Stallion, mane of the, 673. 



Stallions, two, attacking a third, 139; 

 fighting, 647 ; small canine teeth of, 

 664. 



Stansbury, Gapt., observations on peli- 

 cans, 141. 



Staphylinidffl, horn-like processes ia 

 male, 391. 



Starfishes, parental feeling in, 145; 

 bright colors of some, 346. 



Stark, Dr,., on the death-rate in towns 

 and rural districts, 187; on the in- 

 fluence of marriage on mortality, 

 187-188; on the higher mortality 

 of males in Scotland, 320. 



Starling, American field-, pugnacity of 

 male, 477. 



, red-winged, selection of a mate 



by the female, 537. 



Starlings, three, frequenting the same 

 nest, 289, 628; new mates found 

 by, 528. 



Statues, Greek, Egyptian, Assyrian, 

 1 etc., contrasted, 748. 



