N Newton explains precession, 0. Observations, how made, 18; 35, Orientation, 122. P. Parabola, 130, 228. Pendulum, a measure of Perpendicular, 15, 44. Planets, motions of, 91; 122; Pole star, 6, 25, 204. R. Reflection of light, 31, 42. Resolution of forces, 108, 133. Rotation of earth, 66, 87; of S. Schehallien experiment, 256. Spheroid, 60; attraction of, 242. Stars, apparent motion of, 5; how affected by aberration, Sun, apparent motion of, 71; MESSRS. MACMILLAN & Co. beg to call attention to the accompanying Catalogue of their EDUCATIONAL WORKS, the writers of which are mostly scholars of eminence in the Universities, as well as of large experience in teaching. Many of the works have already attained a wide circulation in England and in the Colonies, and are acknowledged to be among the very best Educational Books on their respective subjects. The books can generally be procured by ordering them through local booksellers in town or country, but if at any time difficulty should arise, Messrs. MACMILLAN will feel much obliged by direct communication with themselves on the subject. Notices of errors or defects in any of these works will be gratefully received and acknowledged. LIST OF EDUCATIONAL BOOKS. CLASSICAL. ÆSCHYLUS.—ÆSCHYLI EUMENIDES. The Greek Text, with English Notes, and English Verse Translation and an Introduction. By BERNARD DRAKE, M.A., late Fellow of King's College, Cambridge. 8vo. 7s. 6d. The Greek Text adopted in this Edition is based upon that of Wellauer, which may be said in general terms to represent that of the best manuscripts. But in correcting the Text, and in the Notes, advantage has been taken of the suggestions of Hermann, Paley, Linwood, and other commentators. ARISTOTLE.-ARISTOTLE ON FALLACIES; OR, THE SOPHISTICI ELENCHI. With a Translation and Notes by EDWARD POSTE, M.A., Fellow of Oriel College, Oxford. 8vo. 8s. 6d. Besides the doctrine of Fallacies, Aristotle offers either in this treatise, or in other passages quoted in the commentary, various glances over the world of science and opinion, various suggestions on problems which are still agitated, and a vivid picture of the ancient system of dialectics, which it is hoped may be found both interesting and instructive. "It is not only scholarlike and careful; it is also perspicuous.”—Guardian. ARISTOTLE.-AN INTRODUCTION ΤΟ ARISTOTLE'S This work is introductory to an edition of the Greek Text of Aristotle's "Mr. Cope has given a very useful appendage to the promised Greek Text; |