THE COMMON SCHOOL ARITHMETIC; COMBINING ANALYSIS AND SYNTHESIS; ADAPTED TO THE BEST MODE OF INSTRUCTION IN THE ELEMENTS JAMES S. EATON, M. A., INSTRUCTOR IN PHILLIPS ACADEMY, ANDOVER, AND AUTHOR OF "EASY LESSONS T Entered according to Act of Congress, in the year 1863, by JAMES S. EATON, M. A., In the Clerk's Office of the District Court for the District of Massachusetts. Entered, according to Act of Congress, in the year 1867, TAGGARD & THOMPSON, by In the Clerk's Office of the District Court of the District of Massachusetts. PREFACE. THERE is a large class of pupils whose limited time renders it impossible for them to pursue an extended mathematical course. The author, in accordance with his original intention to prepare a series of text-books in Arithmetic, has now endeavored to adapt this work to the wants of this class of pupils. With this purpose in view, the simple, clementary, practical prin tiples of the science are more fully presented than in his larger work, while the more intricate and less important parts have been treated more briefly or entirely omitted. A corresponding change in the character of the examples has also been made. As in the larger work, so here, constant attention has been paid to the brevity, simplicity, perspicuity, and accuracy of expression; and no effort has been spared in the endeavor to render the mechanical execution appropriate and attractive. Definitions, tables, and explanations of signs have been distributed through the book where their aid is needed, to enable the pupil to learn them more readily than when they are presented collectively. Nearly all the examples have been prepared for this book, and are different from those of the larger wonk; still, to secure uniformity of language (a matter of great importance, as every experienced teacher knows), the leading examples in the several subjects, the definitions and rules, with few exceptions, have been intentionally retained with but little modification. |