AMERICAN ARITHMETIC, ADAPTED TO THE CURRENCY OF THE UNITED STATES. TO WHICH IS ADDED A CONCISE TREATISE ON THE MENSURATION OF PLANES AND SOLIDS. COMPILED BY OLIVER WELCH. IMPROVED AND ILLUSTRATED WITH QUESTIONS ADAPTED SCHOOLS AND ACADEMIES. BY AN EXPERIENCED TEACHER. PORTLAND, ME. 1841. Entered according to act of Congress, in the year 1834, HARY +172 ADVERTISEMENT. To meet the wishes of many instructers, a short COMPEND OF MENTAL ARITHMETIC has een prefixed to the book, in the hope that it will now be found to contain all that is necessary, The compend is confined to simple elementary rules, in order to furnish an introduction to the study. |