ARITHMETIC, ON A NEW PLAN; IN WHICH MENTAL ARITHMETIC IS COMBINED CONTAINING A COMPLETE SYSTEM FOR ALL PRACTICAL PURPOSES; BEING IN DOLLARS AND CENTS. STEREOTYPE EDITION, REVISED AND ENLARGED, WITH. EXERCISES FOR THE SLATE. TO WHICH IS ADDED A PRACTICAL SYSTEM OF BOOK-KEEPING. BY ROSWELL C. SMITH. PHILADELPHIA: WILLIAM MARSHALL & CO. 271, Market street, corner of Seventh. |