FERGUSON, Mr., supposed plurality of origin of domestic fowls. -chickens of black game-fowls. -relative size of eggs of fowls. -yolk of eggs of game-fowls. -early pugnacity of game-cocks. -voice of the Malay fowl. -effects of interbreeding on fowls. -selection in Cochin-China fowls. -on fashion in poultry.
FERNANDEZ, on Mexican dogs.
FERNS, reproduction of abnormal forms of, by spores. -non-diffusion of cell-gemmules in.
FERRETS.
FERTILISATION, artificial, of the St. Valery apple.
FERTILITY, various degrees of, in sheep. -unlimited mutual, of breeds of pigeons. -comparative, of mongrels and hybrids. -influence of nourishment on. -diminished by close interbreeding. -reduced, of Chillingham wild cattle. -of domesticated varieties when crossed.
Festuca, species of, propagated by bulblets.
FILBERTS, spared by tomtits.
FILIPPI, on the breeding of branchiferous tritons.
FINCHES, general sterility of, in captivity.