Excerpt from Catalogue of the Wheeler Gift of Books, Pamphlets and Periodicals in the Library of the American Institute of Electrical Engineers, Vol. 1 Much care has been bestowed on the compilation of Sec tion XL, which is a bibliography of the sets, or partial sets, of periodicals in the collection, in number more than one hundred. The first drafts of entries in these sections were prepared from examination of the volumes and by reference to various available bibliographical sources. The drafts re lating to the journals throughout the world now in existence were then submitted for revision to the present editors of these journals. The secretaries of the English, French and German electrical societies very kindly acted upon a request to have the drafts of the entries of former electrical journals printed in their languages revised by the respective librarians of such societies. In the case of British journals no longer published, the entries for those not strictly electrical in Char acter were revised by Mr. H. M. Mayhew of the periodical department of the British Museum. 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.