Excerpt from The Uses of Hydraulic Cement To His Excellency, Myron T. Herrick, Goverr of Ohio: Sir: - I have the hor to present to you, herewith, the Second Bulletin of the Geological Survey of Ohio, which has been prepared under my supervision. The subject of the report is the Use of Hydraulic Cements, and its preparation has been under the special charge of Professor Frank H. E, of the Ohio State University, whose thoroughness and devotion to his work I take pleasure in specially commending. 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 techlogy 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.