This book was originally published prior to 1923, and represents a reproduction of an importanthistorical work, maintaining the same format as the original work. While some publishers have opted toapply OCR (optical character recognition) technology to the process, we believe this leads tosub-optimal results (frequent typographical errors, strange characters and confusing formatting) anddoes not adequately preserve the historical character of the original artifact. We believe this work isculturally important in its original archival form. While we strive to adequately clean and digitallyenhance the original work, there are occasionally instances where imperfections such as blurred ormissing pages, poor pictures or errant marks may have been introduced due to either the quality of theoriginal work or the scanning process itself. Despite these occasional imperfections, we have brought itback into print as part of our ongoing global book preservation commitment, providing customers withaccess to the best possible historical reprints. We appreciate your understanding of these occasionalimperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to thatintended by the original publisher.