reversion of flowers by stripes and blotches, ii. [37];

excess of nourishment a source of variability, ii. [257].

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];