ntrasted with almonds, i. 338;
double-flowering, i. 338-339, 343;
hybrids of, i. 339;
persistency of races of, _ibid._;
trees producing nectarines, i. 340-341;
variation in, i. 342-343, ii. 256;
bud-variation in, i. 374;
pendulous, ii. 18;
variation by selection in, ii. 218;
peculiar disease of the, ii. 228;
glands on the leaves of the, ii. 231;
antiquity of the, ii. 308;
increased hardiness of the, _ibid._;
varieties of, adapted for forcing, ii. 310;
yellow-fleshed, liable to certain diseases, ii. 336.
PEACH-ALMOND, i. 338.
PEAFOWL, origin of, i. 290;
japanned or black-shouldered, i. 290-291;
feral, in Jamaica, i. 190;
comparative fertility of, in wild and tame states, ii. 112, 268;
white, ii. 332.
PEARS, i. 350;
bud-variation in, i. 376;
reversion in seedling, ii. 31;
inferiority of, in Pliny's time, ii. 215;
winter nelis, attacked by aphides, ii. 231;
soft-barked varieties of, attacked by wood-boring beetles, ii. 231;
origination of good varieties of, in woods, ii. 260;
Forelle, resistance of, to frost, ii. 306.
PEAS, i. 326-330;
origin of, 326;
varieties of, 326-329;
found in Swiss lake-dwellings, i. 317, 319, 326-329;
fruit and seeds figured, i. 328;
persistency of varieties, i. 329;
intercrossing of varieties, i. 330, 397, ii. 129;
effect of crossing on the female organs in, i. 398;
double-flowered, ii. 168;
maturity of, accelerated by selection, ii. 201;
varieties of, produced by selection, ii. 218;
thin-shelled, liable to the attacks of birds, ii. 231;
reversion of, by the terminal seed in the pod, ii. 347.
PECCARY, breeding of the, in captivity, ii. 150.
PEDIGREES of horses, cattle, greyhounds, game-cocks, and pigs, ii. 3.
PEGU, cats of, i. 47;
horses of, i. 53.
PELARGONIUMS, multiple origin of, i. 364;
zones of, i. 366;
bud-variation in, i. 378;
variegation in, accompanied by dwarfing, i. 384;
pelorism in, ii. 167, 345;
by reversion, ii. 59;
advantage of change of soil to, ii. 147;
improvement of, by selection, ii. 216;
scorching of, ii. 229;
numbers of, raised from seed, ii. 235;
effects of conditions of life on, ii. 274;
stove-variety of, ii. 311;
correlation of contracted leaves and flowers in, ii. 330-331.
_Pelargonium fulgidum_, conditions of fertility in, ii. 164.
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