PIGEON tambour.
PIGEON turc.
PIGEONS, origin of. -classified table of breeds of. -pouter. -carrier. -runt. -barbs. -fantail. -turbit and owl. -tumbler. -Indian frill-back. -Jacobin. -trumpeter. -other breeds of. -differences of, equal to generic. -individual variations of. -variability of peculiarities characteristic of breeds in. -sexual variability in. -osteology of. -correlation of growth in. -young of some varieties naked when hatched. -effects of disuse in. -settling and roosting in trees. -floating in the Nile to drink. -dovecote. -arguments for unity of origin of. -feral, in various places. -unity of coloration in. -reversion of mongrel, to coloration of C. livia. -history of the cultivation of. -history of the principal races of. -mode of production of races of. -reversion in. -by age. -produced by crossing in. -prepotency of transmission of characters in breeds of. -sexual differences in some varieties of. -period of perfect plumage in. -effect of segregation on. -preferent pairing of, within the same breed. -fertility of, increased by domestication. -effects of interbreeding and necessity of crossing. -indifference of, to change of climate. -selection of. -among the Romans. -unconscious selection of. -facility of selection of. -white, liable to the attacks of hawks. -effects of disuse of parts in. -fed upon meat. -effect of first male upon the subsequent progeny of the female. -homology of the leg and wing feathers in. -union of two outer toes in feather-legged. -correlation of beak, limbs, tongue, and nostrils. -analogous variation in. -permanence of breeds of.
PIGS, of Swiss lake-dwellings. -types of, derived from Sus scrofa and Sus indicus. -Japanese (Sus pliciceps, Gray), figured. -of Pacific Islands. -modifications of skull in. -length of intestines in. -period of gestation of. -number of vertebrae and ribs in. -anomalous forms. -development of tusks and bristles in. -striped young of. -reversion of feral, to wild type. -production and changes of breeds of, by intercrossing. -effects produced by the first male upon the subsequent progeny of the female. -pedigrees of. -polydactylism in. -cross-reversion in. -hybrid, wildness of. -disappearance of tusks in male under domestication. -solid-hoofed. -crosses of. -mutual fertility of all varieties of. -increased fertility by domestication. -ill effects of close interbreeding in. -influence of selection on. -prejudice against certain colours in. -unconscious selection of. -black Virginian. -similarity of the best breeds of. -change of form in. -effects of disuse of parts in. -ears of. -correlations in. -white buck-wheat injurious to. -tail of, grafted upon the back. -extinction of the older races of.
PIMENTA.
PIMPERNEL.
PINE-APPLE, sterility and variability of the.
PINK, Chinese.
PINKS, bud-variation in. -improvement of.
Pinus pumilio, mughus, and nana, varieties of P. sylvestris.