BY THE SAME AUTHOR. AN ELEMENTARY TREATISE ON SOLID GEOMETRY. 4th edition, revised. Crown 8vo. 6s. AN INTRODUCTORY TREATISE ON RIGID DYNAMICS. Crown 8vo. 48. A CHAPTER ON FRESNEL'S THEORY OF DOUBLE REFRACTION. 2nd edition, revised. 8vo. 2s. PROFESSOR OF MATHEMATICS IN THE UNIVERSITY COLLEGE, AUCKLAND, FOURTH EDITION. CAMBRIDGE: DEIGHTON, BELL, AND CO. LONDON AND NEW YORK: GEORGE BELL & SONS. CHAP. gift 4-14-33 CONTENTS. II. Reflection and Refraction of Direct Pencils III. Reflection and Refraction of Oblique Pencils IV. On Reflections at Two or more Plane Surfaces V. On Refraction through Prisms and Plates |