Higher arithmetic, designed for the use of high schools, academies, and colleges; in which some entirely new principles are developed, and many concise and easy rules given, which have never before appreared in any arithmetic: with an appendix / by George R. Perkins, L. L. D., principal and professor of mathematics of the Normal School of the state of New York, author of elementary arithmetic, elementary algebra, treatise on algebra, elements of geometry, etc., etc. - Perkins, George R.