reversion in, when crossed, ii. [41];
wildness of hybrid, ii. [45];
short-horned, prepotency of, ii. [65];
wild, influence of crossing and segregation on, ii. [86];
crosses of, ii. [96], [104], [118];
of Falkland islands, ii. [102];
mutual fertility of all varieties of, ii. [110];
effects of interbreeding on, ii. [117]-[119];
effects of careful selection on, ii. [194], [199];
naked, of Columbia, ii. [205];