Excerpt from Building Stones and Clays: A Handbook for Architects and Engineers The present volume is an outgrowth of the authors needs in his own classroom. The matter is essentially that presented to his classes in a brief course in the College of Applied Science for Civil Engineers, in the College of Fine Arts for Architects and in the College of Liberal Arts for students of Economic Geology. The work has been multigaphed, bound and used as a manuscript textbook. It is now published for the greater advantage to his own students, and with the hope that it may be useful to others. The object has been to furnish an elementary knowledge of the essential minerals in building stones and the objectionable minerals they sometimes contain; to show the chief characteristics of the more important building stones; to give their geographical distribution and range in compressive strength; to impart some information as to the physical and chemical properties of clays and the products that may be manufactured from them. The author has attempted to state the essential facts and explanations as clearly and simply as possible and to observe a logical order and a due proportion between different parts. The larger amount of space is given to each type of building stone in the state where it is the most abundant. Great care has been taken in classifying and arranging the subject matter that it may follow the order as closely as possible of the various lecture courses on building stones and clays in our different colleges and universities. The author wishes to express here his great indebtedness for constant assistance in the preparation of this work to his colleagues on the University Faculty: Professors T. C. Hopkins, Burnett Smith, A. E. Brainerd, B. W. Clark and H. G. Turner. Also his greater indebtedness to Prof. G. H. Chadwick of the University of Rochester for his careful checking of results and verifying data, and to Prof. W. F. Prouty of the University of Alabama for his contribution on the Marbles of Alabama. 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.