Selection, domestic, i. 130, 134, 136, 160, 161, 167, 181, 183, 186, 189 (note), 192, 208, 215, 226, 228, 231, 257, 299
—— natural, theory of, i. 155, 156, 170 et seq., 195 et seq., 218, 240, 267, 298, 301, ii. [16]-17, [63], [75],
[94], [96], [98], [101], [150];
discovery of, i. 2, 89-126;
anticipations of, 116, 142, 176;
Spencer's alternative term for, 125, 171;
Lord Salisbury's conception of, ii. [59], [60], [65];
Neo-Lamarckians and, [64]
—— physiological, Romanes' theory of, i. 218, ii. [36], [49]-50, [63] et seq., [235]-7
—— sexual, i. 157, 159, 177, 179, 182, 185-6, 194, 199, 203, 204, 212 et seq., 216-17, 220, 224-5, 227 et seq., 256, 261, 298, 299
Self-fertilisation, i. 169, 297, ii. [46]
"Shall we have Common Sense?" Sleeper's, ii. [98], [99]
Sharpe, Mr. J.W., reminiscences of Wallace, ii. [107]-9
Shells, Lyell on, ii. [24]
Shipley, Dr. A.E., and Wallace medallion in Westminster Abbey, ii. [253]
Shrewsbury Grammar School, Darwin and, i. 12, 15