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The object of this work is in some measure to supply a want which the author believes is still felt by the general geologist, physical geographer, intelligent tourist, and heads of educational establishments, namely a detailed and systematised description of the more definite forms assumed by the natural scenery of England and Wales, and a full consideration of the causes to which they owe their existence, so far as they are the effects of denudation. The author would not have ventured upon such a task were it not that his occupation as lecturer on geology, to provincial scientific institutions and schools, has furnished him with opportunities of visiting and revisiting almost every part of England, and a great part of Wales. Until lately, he purposely refrained from reading very much on the subject of denudation, lest a bias should be given to his opinions.
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