01139 W43 Entered, according to Act of Congress, in the year 1886, by in the Office of the Librarian of Congress, at Washington. J. S. CUSHING & Co., PRINTERS, BOSTON. PREFACE. THE objects to be attained in the study of Arithmetic are mental discipline and practical mastery of the subject. These objects are best secured by solving problems that are progressive in character and grouped under a few general heads. This collection of problems is not intended to supplant text-books in Arithmetic, but to supplement them. A great number and variety of examples are given under each head, for the express purpose of enabling a teacher to select such as are specially adapted to the needs of his classes. The examples are, in the main, practical; that is, similar to examples that occur in the ordinary affairs of life; and many of them give accurate and interesting information. The authors will be glad to receive information in regard to errors, and suggestions for improving the work. G. A. WENTWORTH. APRIL, 1887. 926506 |