Suckers, bud-variation by, i. 384.
Sugar cane, sterility of, in various countries, ii. [169];
white, liability of, to disease, ii. [228], [336].
Suicide, hereditary tendency to, ii. [7], [78].
Sulivan, Admiral, on the horses of the Falkland Islands, i. 53;
wild pigs of the Falkland Islands, i. 77;
feral cattle of the Falkland Islands, i. 86, 102;
feral rabbits of the Falkland Islands, i. 112.
Sultan fowl, i. 228, 255.
Sus indica, i. 65, 67-70, ii. [110].