The Arctic Home in the Vedas c17.55

c17.55

Glacial, epoch or period, discovery of its evidence, 4; nature of the evidence of, 22; existence of two, with an intervening interglacial, conclusively established, 23; extent of glaciation in Europe and America, 23; climate cold in glacial, warm in interglacial, 24; various theories regarding the cause of, 25; Lyell's theory and estimate about its duration, 26; Croll's theory and estimate about its duration, 27-33; long duration of, 36; Avestic evidence in proof of, 379 *f*.