A Text-Book on Shades and Shadows and Perspective

PREFACE TO THE FIRST EDITION: This text-book is designed to furnish a short course in Shades and Shadows, and One-Plane Perspective, for students who have studied the elements of Descriptive Geometry. Prominence has been given to the fact that the subjects treated are branches or applications of Descriptive Geometry and follow that subject in logical sequence. The author is greatly indebted to many friends who have kindly assisted in the preparation of the work, and especially to Messrs. C. W. Comstock and C. W. Sherman, Instructors in Civil Engineering, Cornell University. The method of perspective given is that elaborated in "Modern Perspective" by Professor W. R. Ware, and the method of shading used is to be found in the works of M. Jules Pillet. To many works, but especially to those mentioned, the author desires to express his obligation. PREFACE TO THE SECOND EDITION: For this edition the book has been thoroughly revised and in the main rewritten. The most notable changes are in the notation of Shades and Shadows; the extension and addition of certain problems; and the addition of examples of shaded objects showing the application of the principles of shading. My thanks are due Professor H. S. Jacoby, of Cornell University, for many suggestions.