Excerpt from Modern Practice of the Electric Telegraph: A Handbook for Electricians and Operators The methods of testing telegraph lines and apparatus by actual measurement, which are now universally employed in Europe, and to some extent in this country, have been treated upon to an extent commensurate with the importance of the subject. It is hoped that, with the aid of this work, the student may obtain a complete and satisfactory knowledge of this useful and beauti ful system. 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.