Ripon, Lord, i. 277

Rogers, H.D., Darwin on, i. 141

Romanes, G.J.:
theory of physiological selection, i. 218, ii. [36];
Meldola's criticism of, [36], [49]-50;
Wallace's criticism of, [63] et seq.;
his accusation against Wallace, [235]-7

"Root Principles," Child's, ii. [83]

Rothschild, the Hon. Lionel (Lord), Wallace's admiration of his butterflies, ii. [88], [129]

Royal Geographical Society, and exploration of Uaupés River, i. 29

—— Institute, the, Wallace's lecture at, ii. [87], [127], [222]

Rudimentary organs, i. 100

Russell, Mr. Alfred, letter to, ii. [158]

Russia, Czar of, manifesto of, ii. [158]