PERCIVAL, Mr., on inheritance in horses. -on horn-like processes in horses.
Perdix rubra, occasional fertility of, in captivity.
PERIOD of action of causes of variability.
PERIOSTEUM of a dog, producing bone in a rabbit.
PERIWINKLE, sterility of, in England.
PERSIA, estimation of pigeons in. -carrier pigeon of. -tumbler pigeon of -cats of. -sheep of.
PERSISTENCE of colour in horses. -of generic peculiarities.
PERU, antiquity of maize in. -peculiar potato from. -selection of wild animals practised by the Incas of.
"PERUCKEN-TAUBE."
PETALS, rudimentary, in cultivated plants. -producing pollen.
PETUNIAS, multiple origin of.
PEYRITSCH, Dr., vegetable teratology.
"PFAUEN-TAUBE."
Phalaenopsis, pelorism in.
PHALANGES, deficiency of.
Phaps chalcoptera.
Phaseolus multiflorus.
Phaseolus vulgaris.
Phasianus pictus.
Phasianus amherstiae.
PHEASANT, assumption of male plumage by the hen. -wildness of hybrids of, with the common fowl. -prepotency of the, over the fowl. -diminished fecundity of the, in captivity.
PHEASANTS, golden and Lady Amherst's.
PHEASANT-FOWLS.
PHILIPEAUX, regeneration of limbs in the salamander.
PHILIPPAR, on the varieties of wheat.
PHILIPPINE Islands, named breeds of game fowl in the.
PHILLIPS, Mr., on bud-variation in the potato.
Phlox, bud-variation by suckers in.
PHTHISIS, affection of the fingers in.
PHYLLOXERA.
PICKERING, Dr., on the grunting voice of humped cattle. -occurrence of the head of a fowl in an ancient Egyptian procession. -seeding of ordinarily seedless fruits. -extinction of ancient Egyptian breeds of sheep and oxen. -on an ancient Peruvian gourd.
PICOTEES, effect of conditions of life on.
PICTET, A., oriental names of the pigeon.
PICTET, Prof., origin of the dog. -on fossil oxen.
PIEBALDS, probably due to reversion.
PIETREMENT, M., on the ribs of horses.
PIGEAUX, hybrids of the hare and rabbit.
PIGEON a cravate.
PIGEON bagadais.
PIGEON coquille.
PIGEON cygne.
PIGEON heurte.
PIGEON pattu plongeur.
PIGEON polonais.
PIGEON romain.
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.