INCLUDING PLANE, SOLID, AND SPHERICAL GEOMETRY, WITH BY EDWARD OLNEY, PROFESSOR OF MATHEMATICS IN THE UNIVERSITY OF MICHIGAN. SHELDON AND COMPANY, NEW YORK AND CHICAGO. This Series has more examples, and at less price, than any ever published. SCIENCE OF ARITHMETIC. (A strictly High School Text-Book.) Send for full Circular of OLNEY'S ARITHMETICS. FIRST PRINCIPLES OF ALGEBRA. COMPLETE ALGEBRA. (Newly electrotyped in large type.) ** HE first edition of OLNEY'S SPECIAL OR ELEMEN TGEOMETRY was issued nearly twelve years ago. It tained many new features. The book has gone into use in State in the Union, and has been tested by practical teach all grades of schools. This long and varied test has been wa with care by the author, and it is with the greatest pleasur he has found that the general features of the book have well-nigh universally approved. To make the book still more acceptable to the teacher schools of our country, and to keep it abreast with the advancement in science and methods of teaching, as well make it a worthy exponent of the best style of the printer are some of the reasons which have led to the preparation o edition. 1. The division into Chapters and Sections, instead of has been retained, as affording better means of classifyin subject-matter, and also as conforming to the usage of m times in other literary and scientific treatises. 2. Part First of the old edition has been omitted, an definitions and illustrations necessary to the integrity o subject have been incorporated with the body of the work. has been done solely in deference to the general sentiment o teachers of our country. The author can but feel that this ment is wrong. That the best way to present the subje Geometry is to present some of its leading notions and pra facts with their uses in drawing and in common life, attempting to reason upon them, appears to him quite clea |