niCHARDSON. 



INDKX. 



^71 



assemblages of grouse, 405 ; on the 

 battles of male deer, 501 ; on the 

 reindeer, 503 ; on the horns of the 

 musk-ox, 505 ; on antlers of the 

 reindeer with numerous points, 

 510 ; on the moose, 515. 



Uichardson, on the Scutch deer- 

 hound, 516. 



Richter, Jean Paul, on imagination, 74. 



Riedel, on profligate female pigeons, 

 218. 



Riley, Mr., on mimicry in butterflies, 

 324 ; birds' disgust at taste of 

 certain caterpillar.s, 326. 



Ring-ouzel, colours and nidification 

 of the, 455. 



Itipa, l^'ather, on the difficulty of dis- 

 tinguishing the races of the Chinese, 

 167. 



Rivalry, in singing, bi^tween male 

 birds, 369. 



River-hog, African, tusks and knobs 

 of the, 520. 



Rivers, analogy of, to islands, 159. 



Roach, brightness of male during' 

 breeding-season, 340. 



Robbery, of strangers, considered 

 honourable, 117. 



Robertson, Mr., remarks on the de- 

 velopment of the horns in the roe- 

 buck and red-deer, 234. 



Rubin, pugnacity of the male, 360; 

 autumn song of the, 370 ; female 

 singing of the, 370; attacking 

 other birds with red in their plu- 

 mage, 412; young of the, 480. 



Robinet, on the difference of size of 

 the male and female cocoons of the 

 silk-moth, 278. 



Rodents, uterus in the, 38 ; absence 

 of secondary sexual characters in, 

 218; sexual differences in the 

 colours of, 534. 



Roe, winter change of the, 542. 



Rohlfs, Dr., Caucasian features in 

 negro, 167 ; fertility of mixed 

 races in Sahara, 171 ; colours of 

 birds in Sahara, 490 ; ideas of beauty 

 amongst the Bornuans, 582. 



Rolle, F., on the origin of man, 3 ; 

 on a change in German families 

 settled in Georgia, 196. 



Bi)ller, harsh cry of, 371. 



[{umans, ancient, gladiatorial exhi- 

 bitioas.of the, 123. 



44 



Ronjou, M. A., coincidence of aiTested 



development with polydactylism 



37. 

 Rook, voice of the, 375. 

 Rdssler, Dr., on the resemblance o( 



the lower surface of buttez Bies to 



thi' bark of trees, 311. 

 Rostrum, sexual diSerence in th» 



length of, in some weevils, 208. 

 Royer, Madlle., mammals giving 



suck, 163. 

 Rudimentary organs, 11 ; origin of. 



24. 

 Rudiments, presence of, in languages, 



90. 

 Rudolphi, on the want of connexion 



between climate and the colour of 



the skin, 192. 

 Kutf, supposed to be polygamous, 



219; proportion of the sexes in 



the, 248; pugnacity of the, 361; 



double moult in, 390,392; duration 



of dances of, 405 ; attraction of the, 



to bright objects, 413. 

 Ruminants, male, disappearance of 



canine teeth in, 53, 562 ; gene^lly 



polygamous, 217 ; suborbital pits 



of, 529 ; sexual differences of colour 



in, 535. 

 Mupicola crocea, display of plum.ige 



by the male, 395. 

 Riippell, on canine teeth in deer and 



antelopes, 514. 

 Russia, numerical proportion of male 



and female births in, 215, 243. 

 Suticilla, 462. 



Riitimeyer, Prof., on the physiogno- 

 my of the apes, 54 ; on the sexual 



differences of monkeys, 661, 

 Rutlandshire, numerical proportioo 



of male and female births in, 242, 



S. 



Sachs, Prof., on the behaviour of the 

 male and female elements in fertili- 

 sation, 222. 



Sacrifices, human, 144. 



Sagittal crest in male apes and 

 Australians, 558. 



Sahara, fertility of mixed races in, 

 171 ; birds of the, 456 ; animal id* 

 habitants of the, 489. 



Sailors, growth of, delayed by con- 

 ditions of life, 31 ; long-sighted, 33 



