Sidgwick, Prof, and Mrs. H., telepathic experiments by, ii. [199], [200];
Wallace's remarks on, [200]-1
"Siege of the South Pole," Mill's, ii. [82]
Silk, George, i. 52, 87;
Wallace's friendship with, 10;
walking tour in Switzerland with Wallace, 35
Sims, Mrs. (sister of A.R. Wallace), i. 30, 44, 56, 60, 62, 64, 85
—— Thomas, i. 63, 73
Singapore, Wallace at, i. 36
Slade, prosecution of, ii. [197]
Sleeper, George W., ii. [98], [99], [100]
Smedley, Mr. E., ii. [83], [100], [163], [175], [215]
Smith, Dr. Edwin, ii. [210]