6-9, 230, 252, 289 (note), 302;
polygamous, 194, 199;
migration of, ii. 19, 20;
instincts of, 54

Birds' nests, i. 134, 191, 212, 213, 252

"---- ---- and Plumage," Wallace's, i. 191

"---- ---- Philosophy of," Wallace's, i. 212, ii. 6, 8

Blackbird, crested, i. 163

Blainville, D., i. 162

Blandford, H.F., i. 290

Blood relationship, Galton on, i. 277

Blyth, E., i. 132

Blytt, Axel, essay on plants of Scandinavia, i. 293

Borneo, Wallace's collections from, i. 61;
cave exploration, 152

---- Company, i. 38, 39, 40

Boston (U.S.A.), Wallace's lectures at, ii. 15

Botany, Darwin's study of, at Cambridge, i. 17;
Wallace's study of, 20, 21, ii. 106

"----, Elements of," Lindley's, i. 21

Brazil, Wallace's explorations in, i. 29

Bree, Dr., i. 271 (note), 272-3

British Museum, original of Wallace letter in, i. 73

Broadstone, funeral of Wallace at, ii. 252

Bronn, H.G., translates "Origin of Species" into German, i. 141

Brooke, Capt., i 52

---- H. Jamyn, ii. 175

---- Sir James, i. 39, 52, 59-60, 152, 238

Bruce-Joy, Mr., portrait-medallion of Wallace, ii. 122, 254

Buckle, Rev. G., article by, on Lyell's "Principles," i. 232

Buckley, Miss (Mrs. Fisher), i. 260, 264, 313, 316, 319, ii. 40, 89, 90;
reviews "Descent of Man," i. 264

Budd, Dr. Richard, ii. 58

Buffon and Evolution, i. 1

Buru, Wallace's collection of birds from, ii. 3

Bustards, i. 146

Butler, Samuel, "Life and Habit," ii. 102

Butterflies, Wallace's study of, i. 24;
of South America, 30;
of Malay Archipelago, 41-2;
protective adaptation of, 140;
variation and distribution of, 149;
mimetic, 167, 168, 176, 178, 189 (note), 200, 213, 217, 224, 254, 300;
sexual selection of, 179, 260 (note);
flight of, ii, 26

C

Cambridge, Darwin at, i. 16, 17

---- Philosophical Society, attacks on "Origin of Species" at, i. 142

Campbell-Bannerman, Sir Henry, ii. 146

Carbon, deposits of, i. 298

Carlyle, Thomas, ii. 228

Carpenter, Dr., his controversies with Wallace, ii. 195, 198

Carroll, Lewis, Wallace's quotations from, ii. 105

Casuarius, query from Darwin on, i. 239

Caterpillars, colouring of, i. 178, 179, 183, 236, 260, 270, 299

Celebes, i. 138, 237, 289;
geological distribution in, 168

"Cessation of selection," ii. 52

Chambers, Robert, i. 114, 116, 244

Child's "Root Principles," ii. 83

Clairvoyance, ii. 200, 208, 211. (_See also_ Spiritualism)

Claparede, c