Tropical forests, Darwin's description of, i. 31-2;
denizens of, 31
"—— Nature," Wallace's, ii. [11]
Turner, Dr., orchids of, ii. [114]
—— Mr. H.H., signs petition for national memorial of Wallace, ii. [253]
Tylor, E.B., "Early History of Mankind," i. 164;
Wallace on, 165;
"Anthropology," ii. [65]
Tyndall, John, birth of, i. 5;
and psychical research, ii. [198]
U
Uaupés, Indians of, i. 31;
exploration of, i. 29
Unfit, segregation of, ii. [160]-1, [246]
United States, Wallace's lecturing tour in, ii. [14]