A PRACTICAL TREATISE ON ARITHMETIC, WHEREIN EVERY PRINCIPLE TAUGHT IS EXPLAINED IN A SIMPLE AND CONTAINING NUMEROUS QUESTIONS, AND COMBINING THE USEFUL PROPERTIES OF FORMER WORKS, BEING A COMPLETE SYSTEM. TO WHICH IS ADDED TWO METHODS OF BOOK-KEEPING, WITH EXAMPLES FOR EXERCISE. BY GEORGE LEONARD, Jr. SECOND EDITION, STEREOTYPED, BOSTON; OTIS, BROADERS, AND COMPANY. NEW YORK, ROBINSON, PRATT, & CO, AND COLLINS, KEESE, & CO.; 1841. Entered according to Act of Congress, in the year 1840, by in the Clerk's office of the District Court for the District of Massachusetts. CAMBRIDGE; STEREOTYPED BY FOLSOM WELLS, AND THURSTON. |