Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Excerpt from Index to the Catalogue of Books in the Upper Hall of the Public Library of the City of Boston Two stars, prefixed to the shelf number, denote that the book cannot be taken fiom the library building. One stab denotes that, for reasons already stated, the book so marked can be taken out only by special permission. See Preface, page vi. These stars are affixed to the principal title only, the title which has the imprint, and not to other brief entries of the book, called cross-references. Brackets, within titles, inclose words added, or changed in form. 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.