RAY'S MATHEMATICAL SERIES. 67523 REGULAR SERIES. Ray's New Primary Arithmetic. Ray's Elements of Astronomy. Ray's Surveying and Navigation. Ray's Differential and Integral Calculus. TWO-BOOK SERIES IN ARITHMETIC. Ray's New Elementary Arithmetic. COPYRIGHT, 1877, BY VAN ANTWERP, BRAGG & Co. Eclectic Press: VAN ANTWERP, BRAGG & CO., CINCINNATI, PREFACE. FEW works on Intellectual Arithmetic have received more unqualified approbation, and a more extensive patronage, than this, which, for several years, was published under the title-Ray's Arithmetic, Part Second. The numerous editions demanded have again rendered necessary a renewal of the plates; this has afforded an opportunity for remodeling the work. Many important improvements have been introduced, with a design to impart completeness, and give a concise and progressive course of arithmetical analysis. The volume in its present form, embraces: 1st. Exercises on the primary principles, and their applications; together with models of analysis in the shape of solutions. 2d. A progressive and comprehensive presentation of Fractions, intended to render the subject intelligible and attractive. 3d. General Reviews, designed to test the pupil's knowledge of principles, preparatory to the applications of mental analysis which follow. 4th. Reduction and Percentage, with the application of the latter to Profit and Loss, Commission, Insurance, Interest, and Discount. The value of Intellectual Arithmetic is so highly appreciated, that little need be said in its commendation; when properly taught, it is one of the most useful and interesting studies in which pupils can engage. By its study, the pupil is taught to reason, to analyze, to think for himself; while it imparts confidence in his reasoning powers, and strengthens the mental faculties. CINCINNATI, May, 1877. (3) |