Excerpt from 1900-1901, the Geology of Minnesota, Vol. 6: Geological Atlas With Synoptical Descriptions With these words the writer lays down his pen; after an unceasing labor Of twenty-eight years on this enterprise. While the survey, and the report in tout ensemble, conform to the conception which he formed when he entered upon the work, yet he is conscious of its numerous defects. And numerous lines of geological research which have not been entered upon. He can, therefore, with strengthened emphasis, repeat the following from the preface Of volume I of this report. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.