differences of breeds of, from G. bankiva, i. 260;

osteological characters of, i. 260-270;

effects of disuse of parts in, i. 270-274, ii. [298];

feral, i. 190, ii. [33];

polydactylism in, ii. [14];

fertility of, increased by domestication, ii. [112], [167];

sterility of, under certain conditions, ii. [162];

influence of selection on, ii. [196], [198], [209], [210];

evils of close interbreeding of, ii. [124]-[125];

crossing of, ii. [95], [96], [97];