Sus pliciceps, i. 69 (figured).

Sus scrofa, i. 65, 66, ii. [110].

Sus scrofa palustris, i. 68.

Sus vittatus, i. 67.

Swallows, a breed of pigeons, i. 156.

Swayne, Mr., on artificial crossing of varieties of the pea, i. 397.

Sweet Peas, ii. [91];

crosses of, ii. [93], [94];

varieties of, coming true by seed, ii. [20];

acclimatisation of, in India, ii. [311].