Excerpt from An Elementary Treatise on Curve Tracing I DO not much like the idea Of writing a preface, but I feel myself obliged to say a few words on the publication of what I have called a treatise, the term being very likely a misnomer. Although my subject is Curve-tracing and not Curves, I am aware that some complete branches Of this art are not alluded to at all. The student might expect, in a treatise upon this subject, to find methods of drawing Polar Curves, Rolling Curves, Loci Of Equations in Trilinear Coordinates, and Intrinsic Equations; he -might also expect to find interesting Geo metrical Loci discussed; these, and many other things immediately connected with the tracing of curves, have been deliberately omitted, for reasons which I consider good. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.