"BRAHMA Pootras," a new breed of fowls, i. 245.
BRAIN, proportion of, in hares and rabbits, i. 126-129.
BRANDT, origin of the goat, i. 101.
_Brassica_, varieties of, with enlarged stems, ii. 348.
_Brassica asperifolia_, ii. 343.
_Brassica napus_, i. 325.
_Brassica oleracea_, i. 323.
_Brassica rapa_, i. 325, ii. 165.
BRAUN, A., bud-variation in the vine, i. 375;
in the currant, i. 376;
in _Mirabilis jalapa_, i. 382;
in _Cytisus adami_, i. 388;
on reversion in the foliage of trees, i. 382;
spontaneous production of _Cytisus purpureo-elongatus_, i. 390;
reversion of flowers by stripes and blotches, ii. 37;
excess of nourishment a source of variability, ii. 257.
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BRAZIL, cattle of, i. 88.
BREAD-FRUIT, varieties of, ii. 256;
sterility and variability of, ii. 262.
BREE, W. T., bud-variation in _Geranium pratense_ and _Centaurea cyanus_,
i. 379;
by tubers in the dahlia, i. 385;
on the deafness of white cats with blue eyes, ii. 329.
BREEDING, high, dependent on inheritance, ii. 3-4.
BREEDS, domestic, persistency of, ii. 246, 428-429;
artificial and natural, ii. 413-414;
extinction of, ii. 425;
of domestic cats, i. 45-47;
of pigs produced by crossing, i. 78;
of cattle, i. 86-87, 91-93;
of goats, i. 101.
BREHM, on _Columba amaliae_, i. 183.
BRENT, B. P., number of mammae in rabbits, i. 106;
habits of the tumbler pigeon, i. 151;
Laugher pigeon, i. 155;
colouring of the kite tumbler, i. 160;
crossing of the pigeon with _Columba oenas_, i. 193;
mongrels of the trumpeter pigeon, ii. 66;
close interbreeding of pigeons, ii. 126;
opinion on Aldrovandi's fowls, i. 247;
on stripes in chickens, i. 249-250;
on the combs of fowls, i. 253;
double-spurred Dorking fowls, i. 255;
effect of crossing on colour of plumage in fowls, i. 258;
incubatory instinct of mongrels between non-sitting varieties of fowls,
ii. 44;
origin of the domestic duck, i. 277;
fertility of the hook-billed duck, _ibid._;
occurrence of the plumage of the wild duck in domestic breeds, i. 280;
voice of ducks, i. 281;
occurrence of a short upper mandible in crosses of hook-billed and
common ducks, i. 281;
reversion in ducks produced by crossing, ii. 40;
variation of the canary-bird, i. 295;
fashion in the canary, ii. 240;
hybrids of canary and finches,