Rate of organic change usually measured by an incorrect scale, [232]

Rats in the Galapagos, [278]

Raven, wide range of, [15]

Reade, T. Mellard, on changes of sea and land, [84]

Recent continental islands, [243], [331]

Red clay of Bermuda, [265]

Reptiles, dispersal of, [75]

of the Galapagos, [278]

of the Sandwich Islands, [316]

cause of scarcity of, in British Isles, [339]