early domestication and probable origin of the, i. 43-44;

intercrossing of with wild species, i. 44-45;

variations of, i. 45-48;

feral, i. 47, ii. [33];

anomalous, i. 48;

polydactylism in, ii. [14];

black, indications of stripes in young, ii. [55];

tortoiseshell, ii. [73];

effects of crossing in, ii. [86];

fertility of, ii. [111];