The publishers have now the pleasure of presenting the abridgments of Webster's American Dictionary in a carefully revised, greatly improved, and, as nearly as possible, perfected form. The series is rendered complete, and made to include a book just suited to every purpose for which an abridgment of the complete work can be desired, by the introduction of two new books, viz.: The Common School Dictionary, Intermediate between the Primary School and the High School; and the Counting-House and Family Dictionary, a much more full and comprehensive abridgment than we have before offered. The other books in the series have also been most carefully revised, and the new abridgments prepared, by and under the direction of Prof. C. E. Goodrich and Mr. Wm. G. Webster, with assistance from other most competent sources, no pains having been spared to remove any, however slight, grounds for reasonable objection which may have existed to the books in the old form, and to render them as nearly perfect as possible, and yet more worthy the high position they occupy as the STANDARD DICTIONARIES OF THE ENGLISH LANGUAGE, proved to be such by a sale many times greater than that of all other dictionaries published in America combined, and acknowledged such by our Courts of Justice, as well as the people at large. The old stereotype plates having been much worn by the immense numbers of books printed from them, the occasion has been embraced to make the very thorough revision and improvement now completed. All the books in the series are now printed, therefore, on ENTIRELY NEW ELECTROTYPE PLATES, and are uniform in Definitions, Orthography, Orthoepy, &c. It is deemed unnecessary to enlarge upon the claims of these well-known standard works. _Literally thousands_ of testimonials to their superiority to all others are in the hands of the publishers, from the most eminent educational and literary men in all parts of the country. From year to year their sale is steadily and rapidly increasing. It is believed that the mere _increase_ in the sale of these abridgments the present year, will be greater than the entire combined sale of all other American Dictionaries. PUBLISHED BY MASON BROTHERS, NEW YORK. FOR SALE BY BOOKSELLERS GENERALLY. * * * * * Class-Book of Physiology. BY B. N. COMINGS, M. D., PROFESSOR OF PHYSIOLOGY, CHEMISTRY, AND NATURAL HISTORY, IN CONNECTICUT STATE NORMAL SCHOOL. 12mo. 324 pages. Price $1 25. REVISED EDITION, WITH AN APPENDIX.