Note 89b — Chapter VII · GEOLOGICAL NOTES.

Mr. Wallace says; “Every mountain group, north of the Bristol channel, was a centre from which, in the Ice-age, glaciers radiated; these became confluent, extensive ice-sheets, which overflowed into the Atlantic on the west, and spread far over the English lowlands on the east and south.” “The Ice-age and its work.”—“Fortnightly Review,” Nov., 1893, p., 269.