Excerpt from Lakes of North America: A Reading Lesson for Students of Geography and Geology
A large portion of the facts to the lakes of North America, presented in this book, were gleaned by the writer during thirteen years' geological work for the National Government, and are recorded principally in the publications of the U. S. Geological Survey. The facilities for exploration afforded by my connection with Government surveys enabled me to visit various parts of the United States, inclusive of Alaska, and to observe many phases in the topographical development of our continent.
The publications of the U. S. Geological Survey, and of several State surveys, also contain the records of observations by others, relating to the subject here treated, which have been freely used. It is hoped that this popular presentation of a small part of the results of the various surveys referred to will serve to direct attention to the rich and varied store of information contained in the reports of my colleagues and fellow-workers.
Besides the publications of official surveys, many papers relating to the subject here discussed have appeared in journals, proceedings of scientific societies, etc., to which references may be found in footnotes in this volume.
The origin of lake basins and the history of the great cycles in the development of the relief of the land to which they pertain, have been discussed especially by Professor W. M. Davis, of Harvard University. Professor Davis has also read the manuscript of this book and kindly given me the benefit of his criticisms and suggestions.
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