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CEOLOGY OF ENGLAND.
groups of hills and mountains, w'hich viewedon a grand scale may be considered as form-ing: one chain extending; along; the westernside of England and Wales, from Cornwall toCumberland, and from thence to the northernextremity of Scotland . All the highest moun-tains in Great Britain are situated in thischain. The breadth of our island in thesouthern and eastern parts is determined bytwo lower ranges of hills : one of these ex-tepds from Dorsetshire to Kent; the otherstretches in a waving line from the isle ofPortland to the Wolds in the east riding ofYorkshire .
The western chain of mountains is broken,by the intervention of the Bristol channel andthe low grounds of Lancashire and Cheshire,into three parts or ranges. For the sake ofdistinction they may he denominated theNorthern, the Cambrian, and the Devonian range. Considered as parts of one chain, theyconstitute the alpine district of England, co-loured red in the map, plate IV.
The line A A A nearly marks the directionof the range which extends from the west of