Flowers, tropical, i. 238;
cleistogamic, 298
Flustra, Darwin's article on larvæ of, i. 16
Forbes, Dr. Henry, ii. [12] (note);
estimation of Wallace, [229]-33, [239]
—— Prof., i. 96, 99, 100, 132, 139, 189, 248
Forel and Darwin, i, 294, 296
"Forms of Flowers," Darwin's, i. 298
Fossils, i. 20
"Foundations," Sir F. Darwin's, ii. [92]
Free trade and monopoly, Wallace's views on, ii. [152]
"Freeland," Wallace's opinion of, ii. [114]