tNDEl, 743 



Finlavson, on the Cochin Chinese, 659 



Fire, use of, 54, 164. 204. 



Fischer, on the pugnacity of the male of, Lethrus cep7ialotes, 340. 



Fischer, F. Von, on display of brightly colored parts by monkeys 

 in courtship, 709. 



Fish, eagerness of male, 250; proportion of the sexes in, 281; 

 sounds produced by, 393. 



Fishes, kidneys of, represented by Corpora Wolffiana in the human 

 embryo, 10; male hatching ova in their mouths, 185; receptacles for 

 ova possessed by, 235; relative size of the sexes in, 380; fresh water, 

 of the tropics, 389; protective resemblance in, 390; change of color 

 in, 390; nest-building, 391; spawning of, 392; sounds produced by, 

 393, 640; continued growth of, 552. 



Flamingo, age of mature plumage, 551. 



Flexor poUicis longus, similar variation of, in man, 48. 



Flies, humming of, 318. 



Flint tools, 164. 



Flints, difficulty of chipping into form, 56. 



Florida, Quiscalus majm' in, 281. 



Florisuga meUivara, 504. 



Flounder, coloration of the, 390. 



Flower, W. H , on the abductor of the fifth metatarsal in apes, 

 47; on the jwsition of the seals, 170; on the Pitlieda Tnonachus, 229; 

 on the throat pouch of the male bustard, 423. 



Fly-catchers, colors and nidification of, 518. 



Fetus, human, woolly covering of the, 21; arrangement of the 

 hair on, 172. 



Food, influence of, upon stature, 35. 



Foot, prehensile power of the, retained in some savages, 58; pre- 

 hensile, in the early progenitors of man, 182. 



Foramen, supra-condyloid, exceptional occurrence of in the 

 humerus of man, 24, 49; in the early progenitors of man, 179. 



Forbes, D., on the Aymara Indians, 39; on local variation of color 

 in the Quichuas, 223; on the hairlessness of the Aymaras and 

 Qaichuas, 639; on the long hair of the Aymaras and Quichuas, 637, 

 662 



Forel, F., on white young swans, 550. 



Forester, Hon. O. W., on an orphan hawk, 465. 



Formicn rufa, size of the cerebral ganglia in, 61. 



Fossils, absence of, connecting man with the apes, 178. 



Fowl, occurrence of spurs in the female, 257; game, early pugnac- 

 ity of, 270; Polish, early development of cranial peculiarities of, 270; 

 variations in plumage of, 438; examplas of correlated development in 

 the, 484, domestic, breeds and sub breeds of, 523. 



Fowls, spangled Hamburg, 259, 270, inheritance of changes of plu- 

 mage by, 259, sexual peculiarities in, transmitted only to the same 

 sex, 260, loss of secondary sexual characters by male, 261 ; Polish, 

 origin of the crest in, 261; period of inheritance of characters by, 269; 

 cuckoo, 270; development of the comb in, 270; numerical proportion 

 of the sexes in 280 , courtship of, 473 ; mongrel, between a black 

 Spanish cock and different hens, 485, penciled Hamburg, difference 

 of the sexes in, 509, Spanish, sexual differences of the comb in, 509; 

 spurred, in both sexes, 511 



