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"The publishers of the Encyclopedia Americana conferred an obligation on the public when, fourteen years ago, they issued the thirteen volumes from their press. They contained a wonderful amount of information, upon almost every subject which would be likely to occupy public attention, or be the theme of conversation in the private circle. Whatever one would wish to inquire about, it seemed only necessary to dip into the Encyclopaedia Americana, and there the outline, at least, would be found, and reference made to those works which treat at large upon the subject. It was not strange, therefore, that the work was popular. But in fourteen years, great events occur. The last fourteen years have been full of them, and great discoveries have been made in sciences and the arts; and great men have, by death, commended their names and deeds to the fidelity of the biographer, so that the Encyclopaedia that approached perfection in 1832, might fall considerably behind in 1846. To bring up the work, and keep it at the present point, has been a task assumed by Professor Vethake, of the Pennsylvania University, a gentleman entirely competent to such an undertaking; and with a disposition to do a good work, he has supplied a supplementary volume to the mam work, corresponding in size and arrangements therewith, and becoming, indeed, a fourteenth volume. The author has been exceedingly industrious, and very fortunate in discovering and selecting materials, using all that Germany has presented, and resorting to every species of information of events connected with the plan of the work, since the publication of the thirteen volumes. He has continued articles that were commenced in that work, and added new articles upon science, biography, history, and geography, so as to make the present volume a necessary appendage in completing facts to the other. The publishers deserve the thanks of the readers of the volume, for the handsome type, and clear white paper they have used in the publication."- United States Gazette.

"This volume is worth owning by itself, as a most convenient and reliable compend of recent History, Biography, Statistics, 4c, etc. The entire work forms the cheapest and probably now the most desirable Encyclopaedia published for popular use." - New York Tribune.

"The Conversations Lexicon (Encyclopaedia Americana) has become a household book m all the intelligent families in America, and is undoubtedly the best depository of biographical, historical, geographical and political information of that kind which discriminating readers require." - Silli-man's Journal.

"This volume of the Encyclopaedia is a Westminster Abbey of American reputation. What names are on the roll since 1833!" - N. Y. Literary World.

"The work to which this volume forms a supplement, is one of the most important contributions that has ever been made to the literature of our country. Besides condensing into a comparatively narrow compass, the substance of larger works of the same kind which had preceded it, it contains a vast amount of information that is not elsewhere to be found, and is distinguished, not less for its admirable arrangement, than for the variety of subjects of which it treats. The present volume, which is edited by one of the most distinguished scholars of our country, is worthy to follow in the train of those which have preceded it. It is a remarkably felicitous condensation of the more recent improvements in science and the arts, besides forming a very important addi-an to the department of Biography, the general progress of society. etc., &w " - Albany Argus.