Excerpt from Annual Report of the State Geologist: For the Year 1891 The production Oea geological map of the State was one of the leading objects of the present Survey, as indicated in the last annual report. Particular stress was put on the need and desirability of a. Map which should exhibit by appropriate/ colors or symbols the various surface formations, as distinguished from the underlying rock formations, commonly shown on geological maps, and to the exclusion of the former class. The work of preparing such a map has been begun by the State in conformity to the plan agreed upon with the United States Geological Survey, whereby the latter undertakes the study of the crystalline rocks, and the State is to map the surface formations. According to this plan of co-operation the National Survey has about three-sevenths of the State to map geologically. 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.