of pigeons among the Romans, i. 205;
pears described by, ii. 215.
PLUM, i. 345-347;
stones figured, i. 345;
varieties of the, i. 345-346, ii. 219;
bud-variation in the, i. 375;
peculiar disease of the, ii. 227;
flower-buds of, destroyed by bullfinches, ii. 232;
purple-fruited, liable to certain diseases, ii. 336.
PLUMAGE, inherited peculiarities of, in pigeons, i. 160-161;
sexual peculiarities of, in fowls, i. 251-255.
PLURALITY of races, Pouchet's views on, i. 2.
_Poa_, seeds of, used as food, i. 308;
species of, propagated by bulblets, ii. 170.
PODOLIAN cattle, i. 80.
POINTERS, modification of, i. 42;
crossed with the foxhound, ii. 95.
POIS sans parchemin, ii. 231.
POITEAU, origin of _Cytisus Adami_, i. 390;
origin of cultivated varieties of fruit-trees, ii. 260.
POLISH fowl, i. 227, 250, 254, 256-257, 262;
skull figured, i. 262;
section of skull figured, i. 263;
development of protuberance of skull, i. 250;
furcula figured, i. 268.
POLISH, or Himalayan rabbit, i. 108.
POLLEN, ii. 363-364;
action of, ii. 108;
injurious action of, in some orchids, ii. 134-135;
resistance of, to injurious treatment, ii. 164;
prepotency of, ii. 187.
POLLOCK, Sir F., transmission of variegated leaves in _Ballota nigra_, i.
383;
on local tendency to variegation, ii. 274.
POLYANTHUS, ii. 21.
POLYDACTYLISM, inheritance of, ii. 12-16;
significance of, ii. 16-17.
_Polyplectron_, i. 255.
PONIES, most frequent on islands and mountains, i. 52;
Javanese, i. 53.
POOLE, Col., on striped Indian horses, i. 58, 59;
{472}
on the young of _Asinus indicus_, ii. 43.
POPLAR, Lombardy, i. 361.
POEPPIG, on Cuban wild dogs, i. 27.
POPPY, found in the Swiss lake-dwellings, i. 317, 319;
with the stamens converted into pistils, i. 365;
differences of the, in different parts of India, ii. 165;
monstrous, fertility of, ii. 166;
black-seeded, antiquity of, ii. 429.
PORCUPINE, breeding of, in captivity, ii. 152.
PORCUPINE family, ii. 4, 76.
_Porphyrio_, breeding of a species of, in captivity, ii. 156.
PORTAL, on a peculiar hereditary affection of the eye, ii. 9.
PORTO Santo, feral rabbits of, i. 112.
_Potamochoerus penicillatus_, ii. 150.
POTATO, i. 330-331;
bud-variation by tubers in the, i. 384-385;
graft-hybrid of, by union of half-tubers, i. 395;
individual self