460 



ROBIN. 



INDEX. 



SANDWICH. 



Robin, pugnacity of the male, ii. 40 ; 

 autumn song of the, ii. 54 ; female, 

 singing of the, ii. 54 ; attacking 

 other birds with red in their plu- 

 mage, ii. Ill ; young of the, ii. 

 208. 



KOBiNET, on the difference of size of 

 the male and female cocoons of the 

 silk-moth, 1. 346. 



Rodents, uterus in the, i. 123 ; ab- 

 sence of secondary sexual characters 

 in, i. 268 ; sexual diflerences in the 

 colours of, ii, 286. 



Roe, winter change of the, ii. 299. 



ROLLE, F., on the origin of man, i. 4 ; 

 on a change in German families 

 settled in Georgia, i. 246. 



Roller, ii. 56. 



Romans, ancient, gladiatorial exhi- 

 bitions of the, i. 101. 



Rook, voice of the, ii. 61. 



ROSSLER, Dr., on the resemblance of 

 the lower surface of butterflies to 

 the bark of trees, i. 392. 



Rostrum, sexual difference in the 

 length of, in some weevils, i. 255. 



Rudimentary organs, i, 17 ; origin 

 of, i. 32. 



Rudiments, presence of, in languages, 

 i. 60. 



RuDOLPHi, on the want of connexion 

 between climate and the colour of 

 the skin, i. 241. 



Ruff, supposed to be polygamous, i. 

 270 ; proportion of the sexes in 

 the, i. 306 ; pugnacity of the, ii. 

 41, 48 ; double moult in, ii. 81, 

 84 ; duration of dances of, ii. 100 ; 

 attraction of the, to bright objects, 

 ii. 111. 



Ruminants, male, disappearance of 

 canine teeth in, i. 144, ii. 325 ; ge- 

 nerally polygamous, i. 266 ; analogy 

 of Lamellicorn beetles to, i. 373 ; 

 suborbital pits of, ii. 280 ; sexual 

 differences of colour in, ii. 287. 



Eupicola crocea, display of plumage 

 by the male, ii. 87. 



RuPPELL, on canine teeth in deer and 

 antelopes, ii. 258. 



Russia, numerical proportion of male 

 and female births in, i. 301. 



Euticilla, ii. 180. 



RtJTiMEYER, Prof., on the physiogno- 



my of the apes, i. 149 ; on the 

 sexual differences of monkeys, ii. 

 323. 

 Rutlandshire, numerical proportion 

 of male and female births in, i. 

 301. 



S. 



Sachs, Prof., on the behaviour of the 

 male and female elements in fertili- 

 sation, i. 274. 



Sacrifices, Human, i. 182. 



Sagittal crest in male apes and 

 Australians, ii. 319. 



Sahara, birds of the, ii. 172 ; animal 

 inhabitants of the, ii. 224. 



Sailors, growth of, delayed by con- 

 ditions of life, i. 114; long-sighted, 

 i. 118. 



Sailors and soldiers, difference in the 

 proportions of, i. 116. 



St. John, Mr., on the attachment of 

 mated birds, ii. 108. 



St. Kilda, beards of the inhabitants 

 of, ii. 321. 



Salmo eriox, and S. umbla, colouring 

 of the male, during the breeding 

 season, ii. 14. 



Salmo lycaodon, ii. 4. 



Salmo salar, ii. 4. 



Salmon, leaping out of fresh water, 

 i. 83 ; male, ready to breed before 

 the female, i. 260 ; proportion of 

 the sexes in, i. 308 ; male, pugna- 

 city of the, ii. 3 ; male, characters 

 of, during the breeding season, ii. 

 3, 14; spawning of the, ii. 19; 

 breeding of immature male, ii. 

 215. 



Salvin, 0., on the Humming-birds, i. 

 269, ii. 168; on the numerical 

 proportion of the sexes in Hum- 

 ming-birds, i. 307, ii. 221; on C%a- 

 ma&petes and Penelope^ ii. 64 ; on 

 Selasplwrus 2)latycercus, ii. 65 ; on 

 Pipra deliciosa, ii. 66 ; on Chasmo- 

 rhynchus, ii. 79. 



Samoa Islands, beardlessness of the 

 natives of, ii. 322, 349. 



Sand-skipper, i. 334. 



Sandwich Islands, variation in the 

 skulls of the natives of the, i. 108 ; 



