Excerpt from Manual of Wireless Telegraphy and Telephony Since the publication of the first edition of Mr. Collins' Manual of Wireless Telegraphy the newer art of transmitting articulate speech without wires has been reduced to commercial practice. Wireless telephony employs electric waves as does wireless telegraphy, but the means for producing these waves, as well as their characteristics, are quite different, and in order to bring out the salient features there is appended in this edition a clearly and concisely written treatise by Mr. Newton Harrison. By a careful perusal of the appended text the wire less operator will obtain a fair working knowledge of the construction and operation of the wireless telephone, and since the new apparatus is rapidly coming into general use this information should prove of great value. 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.