Excerpt from The Preparation of Illustrations for Reports of the United States Geological Survey: With Brief Descriptions of Processes of Reproduction There has been an Obvious need in the Geological Survey Of a paper devoted wholly to illustrations. N 0 complete paper on the character, use, and mode of preparation Of illustrations has been published by the Survey, though brief suggestions concerning certain features of their use have been printed in connection with other suggestions per taining to publications. The present paper includes matter which it is hoped will be Of service to authors in their work Of making up original drafts Of illustrations and to draftsmen who are using these originals in preparing more finished drawings, but it is not a technical treatise on drafting. 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.