colours of feral horses in, i. 60-61;
North, native cultivated plants of, i. 312;
skin of feral pig from, i. 77;
South, variations in cattle of, i. 88, 92.
Amygdalus persica, i. 336-344, 374.
Ammon, on the persistency of colour in horses, ii. [21].
Anagallis arvensis, ii. [190].
Analogous variation, i. 409, ii. [348]-[352];
in horses, i. 55;
in the horse and ass, i. 64;