INDEX 



858 



Tetrao umbeltas, 496; on Tetrao uro- 

 phasianus, 483; on the drumming 

 of grouse, 488; on the dances of 

 Tetrao phasianellus, 492-493; on 

 assemblages of grouse, 524; on the 

 batlles of male deer, 647; on the 

 reindeer, 650; on the horns of the 

 musk-ox, 653 ; on antlers of the rein- 

 deer with numerous points, 659; on 

 the moose, 665 ; on the Scotch deer- 

 hound, 667. 



Bichter, Jean Paul, on imagination, 

 106. 



Biedel, on profligate female pigeons, 

 540. 



Riley, Mr., on mimicry in butterflies, 

 422; birds' disgust at taste of cer- 

 tain caterpillars, 425. 



Ring-ouzel, colors and nidification of 

 the, 587. 



Ripa, Father, on the difficulty of dis- 

 tinguishing the races of the Chinese, 

 223. 



Rivalry, in singing, between male birds, 

 479. 



River-hog, African, tusks and knobs of 

 the, 671. 



Rivers, analogy of, to islands, 213. 



Roach, brightness of male during breed- 

 ing-season, 442. 



Robbery, of strangers, considered hon- 

 orable, 159. 



Robertson, Mr., remarks on the devel- 

 opment of the horns in the roebuck 

 and red-deer, 308. 



Robin, pugnacity of the male, 468; 

 autumn song of the, 480; female 

 singing of the, 480 ; attacking other 

 birds with red in their plumage, 583 ; 

 young of the, 620. 



Eobinet, on the difference of size of 

 the male and female cocoons of the 

 silk-moth, 366. 



Rodents, uterus in the, 60; absence of 

 secondary sexual characters in, 288 ; 

 sexual differences in the colors of, 

 689. 



Roe, winter change of the, 700. 



Rohlfs, Dr., Caucasian features in 

 negro, 223; fertility of mixed races 

 in Saliara, 228; colors of birds in 

 Sahara, 632 ; ideas of beauty among 

 the Bornuans and the PuUo tribes, 

 749. 



Bolle, F., on the origin of man, 19; on 



a change in German families settled 

 in Georgia, 260. 



Boiler, harsh cry of, 482. 



Bomans, ancient, gladiatorial exhibi- 

 tions of the, 166. 



Bonjou, M. A., coincidence of arrested 

 development with polydaotylism, 60. 



Rook, voice of the, 486. 



Bossier, Dr., on the resemblance of the 

 lower surface of butterflies to the 

 bark of trees, 407. 



Rostrum, sexual difference in the length 

 of, in some weevils, 276. 



Boyer, Mdlle., mammals giving suck, 

 218. 



Rudimentary organs, 28 ; origin of, 43. 



Rudiments, presence of, in languages, 

 126. 



Rudolphi, on the want of connectioit 

 between climate and the color of the 

 skin, 265. 



Ruff, supposed to be polygamous, 290 ; 

 proportion of the sexes in the, 326; 

 pugnacity of the, 469 ; double moult 

 in, 505, 507 ; duration of dances of, 

 523 ; attraction of the, to bright ob- 

 jects, 533. 



Ruminants, male, disappearance of ca- 

 nine teeth in, and its relation to the 

 development of horns, 79, 724; gen- 

 erally polygamous, 287; suborbital 

 pits of, 684; sexual differences of 

 color in, 691. 



Rupicola crocea, display of plumage by 

 the male, 510. 



Rvippell, on canine teeth in deer and 

 antelopes, 664. 



Russia, numerical proportion of male 

 and female births in, 284, 319. 



Ruticilla, 595. 



Riitimeyer, Prof., on the physiognomy 

 of the apes, 79-80; on the sexual 

 differences of monkeys, 722. 



Rutlandshire, numerical proportion of 

 male and female births in, 319. 



S 



IS, Prof., on the behavior of the 

 male and female elements in fertili- 

 zation, 293. 



Sacrifices, human, 194. 



Sagittal crest on the cranium in adult 

 male apes and Australians, 718-719. 



