of almond, peach, and nectarine, i. 339;
naturally produced, of species of Cytisus, i. 390;
from twin-seed of Fuchsia coccinea and fulgens, i. 391;
reversion of, i. 392-394, ii. [36], [48]-[50];
from mare, ass, and zebra, ii. [42];
of tame animals, wildness of, ii. [44]-[46];
female instincts of sterile male, ii. [52];
transmission and blending of characters in, ii. [92]-[95];
breed better with parent species than with each other, ii. [131];