Excerpt from Elements of Bibliography Elements and factors - The prime requisite of bibliog raphy is the existence of books A book is any composition recorded on a number of leaves bound together in proper order so as to convey ideas to anyone conversant with the form of composition used. Printing is not essential; neither is publication. In fact, some of the most interesting and valuable books have never been printed or published. These are known as manuscript books or inedita. Large books often appear in more than one volume. Certain small books are called pamphlets - a vague term usually understood to mean a book of less than one hundred pages, unbound, and devoted to some ephemeral subject Periodicals are hybrids among books the typical period ical being a serial publication, the units of which are made up of a number of inseparable pamphlet contributions and which appears at more or less regular intervals throughout the year. Bound volumes of periodicals have always been treated as books; separate copies of a peri odical are not ordinarily looked upon as books, except from the standpoint of manufacture and library circu lation; but the various articles included in a periodical, when considered separately, are rightfully treated as pamphlets. Indeed, many of them are reissued in sepa rate pamphlet 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.