Ridley, Mr. H.N., ii. 76

Ripon, Lord, i. 277

Rogers, H.D., Darwin on, i. 141

Romanes, G.J.: 
  theory of physiological selection, i. 218, ii. 36;
  Meldola’s criticism of, 36, 49-50;
  Wallace’s criticism of, 63 et seq.;
  his accusation against Wallace, 235-7

“Root Principles,” Child’s, ii. 83

Rothschild, the Hon. Lionel (Lord), Wallace’s admiration of his
    butterflies, ii. 88, 129

Royal Geographical Society, and exploration of Uaupes River, i. 29

——­ Institute, the, Wallace’s lecture at, ii. 87, 127, 222

Rudimentary organs, i. 100

Russell, Mr. Alfred, letter to, ii. 158

Russia, Czar of, manifesto of, ii. 158

——­ Wallace on, ii. 161

Ruetimeyer, researches on mammals in Switzerland by, i. 251

Ryle, Bishop, and the medallion of Wallace, 254;
  sermon at its unveiling, 254-5

S

Sadong River, Wallace’s exploration of, i. 93

Salisbury, Bishop of, at funeral of Wallace, ii. 252

——­ Marquis of, view of Natural Selection, ii. 59, 60;
  translation of his address, 65

Santiago, Darwin at, i. 34

Sarawak, Wallace in, i. 28, 38-40, 93, 106

Scandinavia, distribution of plants in, i. 293

Schaffhausen, Dr., almost anticipates Natural Selection, i. 142

“Scientific Aspect of the Supernatural,” Wallace’s, ii. 186

“——­ Demonstration of a Future Life,” Hudson’s, ii. 203

Sclater, P.H., on Wallace’s “Malay Archipelago,” i. 139-140;
  and Lemuria, 290 (note);
  division of earth into zoological regions, ii. 8;
  distrust of Gould, 24

Scott, Dr. Dukinfield H., speech at presentation of Darwin-Wallace Medals,
    i. 110-112;
  at Wallace’s funeral, ii. 252;
  and the Wallace memorial in Westminster Abbey, 254

Scott’s “Antarctic Voyage,” ii. 82

Sedgwick, Prof., and Darwin, i. 17, 18;
  attacks Darwin at Cambridge Philosophical Society, 142

See, T.J.J., ii. 179-80

Seeman, Berthold, i. 199, 201, 210, 211

Segregation of the unfit, Wallace on, ii. 160-1, 246

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