Excerpt from The Evolution of Mine-Surveying Instruments: Comprising the Original Paper of Mr. Scott on the Subject, Together With the Discussion Thereof, and Independent Contributions on the Subject This volume contains by no means the Whole of the discus sion elicited by the original paper of Mr. Scott. Additional contributions, received too late for introduction here, Will be found in the Transactions of the Institute, to Which. The reader is referred. This circumstance is, however, less to be lamented than if it had been possible, by a little longer delay, to close the Whole discussion, leaving nothing to be corrected or added. But the subject is one of those Which Will never be exhausted and there would be greater cause for regret if the issue of this volume should be construed by practising mine-surveyors and the designers or makers of surveying-instruments as an intima tion that further statements of fact, argument or criticism would not be welcomed by the Council of the Institute. I trust that such a misunderstanding Will be effectively prevented by the appearance in Vol. XXXI. Of the Transactions of the interesting additional papers of Mr. H. D. Hoskold, to say nothing of minor contributions on the subject, none of Which have been included ln the present volume. 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.