NEW ELEMENTARY ALGEBRA: CONTAINING THE RUDIMENTS OF THE SCIENCE. FOR SCHOOLS AND ACADEMIES. BY HORATIO N. ROBINSON, LL. D., AUTHOR OF A FULL COURSE OF MATHEMATICS. CHICAGO: PUBLISHED BY S. C. GRIGGS & CO., Eduet 128.66.750 BY EXCHANGE JUN 23 1939 Series of Mathematics, The most COMPLETE, most PRACTICAL, and most SCIENTIFIC SERIES of (IN TWENTY-TWO VOLUMES.) Robinson's Progressive Table Book, Robinson's Progressive Primary Arithmetic, - Robinson's University Algebra, - Robinson's Key to New University Algebra, - • Robinson's Surveying and Navigation, Robinson's Analyt. Geometry and Conic Sections, Robinson's Elementary Astronomy, Robinson's University Astronomy, Robinson's Mathematical Operations, Robinson's Key to Geometry and Trigonometry, Conic • • Entered, according to Act of Congress, in the year 1859. bv In the Clerk's Office of the District Court of the United States for the Northern PREFAСЕ, WITHIN the last twenty years Algebra has been steadily gaining ground and favor as an important branch of education, and it is now taught and studied in all the academies, seminaries, and best public schools in our country. While this fact is indicative of the onward progress of popular education, it also bears testimony to the value of the science as one eminently calculated to discipline the mind and develop the reasoning powers. Pupils now commence this study at an earlier age than formerly, and hence the necessity of a work elementary in its character, and adapted to the comprehension of the youthful mind. In the preparation of the following treatise the author has constantly kept in mind the existing condition of school and academic education, and has adapted the work to the most approved modern methods of teaching. The author believes this treatise to be superior to other elementary works upon the same subject in the following particulars: beauty of typography, the clear and concise operations and analyses of the rules and principles, the great number of examples and their adaptation to the several subjects, and the progressive character of the work, so necessary to the vigorous development of the intellect. ( |