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CORRESP. MEM. NEW YORK ACAD. SCIENCES; PAST PRESIDENT LIVERPOOL GEOL. Soc.
AUTHOR OF THE ORIGIN OF MOUNTAIN RANGES'
LONGMANS, GREEN, AND CO.
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The problems of Earth-Structure which are dealt with in this work are the outcome of many years' study. I have attempted to arrange the matter in such a way that, while making a detailed investigation of each problem, the inception and growth of the essential underlying idea should become apparent. My Presidential Addresses here reprinted on the ‘Denudation of the Two Americas' and the Atlantic as a Geological Basin' contain the germs of some of the leading principles advocated, and which I am fain to believe are natural developments of the True Principles of Geology' as expounded by HUTTON, LYELL, and indirectly by CHARLES DARWIN. The application of dynamical principles to the explanation of the facts of geology is the most modern phase of geological investigation, and it is to this branch that my principal studies have been directed. Further introductory reinarks would be superfluous, as the problems carry their own explanation.
To the Geological Society of London my thanks are due for the encouragement afforded by the