in pigeons, i. 171-177;
in fowls, i. 270-274;
in ducks, i. 284-286;
in the silk-moth, i. 300-304.
Divergence, influence of, in producing breeds of pigeons, i. 220.
Dixon, E. S., on the musk duck, i. 182;
on feral ducks, i. 190;
on feral pigeons in Norfolk Island, i. 190;
crossing of pigeons, i. 192;
origin of domestic fowls, i. 230;