Geometrical Optics

THE preface to this little book is somewhat misleading. We there read:—“The growing demand for a book on Geometrical Optics based upon the Curvature system has led to the production of this small volume. …” If the use of the curvature method constituted the chief characteristic of the book, we should have but little to say in its favour. The curvature method undoubtedly possesses many obvious advantages, but the loose and in places quite inaccurate manner in which the elementary theory of mirrors and lenses is here set forth does much to obscure the merits of the system.Geometrical Optics.By V. H. Mackinney H. L. Taylor. Pp. iii+128. (Birmingham: J. and H. Taylor.)