Denudation, theory of, i. 250, 309, ii. [71], [72], [73]
Deposition, theory of, i. 309, ii. [72], [73]
"Descent of Man," Darwin's, i. 152, 255, 259, 284, 289 (note), ii. [2], [34];
review in Pall Mall Gazette, i. 263;
in Spectator, 263
"Development of Human Races under Law of Natural Selection," Wallace's, ii. [6], [183]
"Different Forms of Flowers and Plants of the Same Species," Darwin's, i. 298, ii. [2]
Dimorphism, i. 167, 202, 220
Dipsomania, Wallace on, ii. [68]
Discontinuous variation, ii. [62], [63]
Disuse, physiological effects of, i. 69