In issuing this second treatise on Crayon Portraiture, Liquid Water Colors and French Crystals, for the use of photographers and amateur artists, I do so with the hope and assurance that all the requirements in the way of instruction for making crayon portraits on photographic enlargements and for finishing photographs in color will be fully met. To these I have added complete instructions for free-hand crayons. This book embodies the results of a studio experience of twenty-four years spent in practical work, in teaching, and in overcoming the everyday difficulties encountered, not alone in my own work, but in that of my pupils as well. Hence the book has been prepared with special reference to the needs of the student. It presents a brief course of precepts, and requires on the part of the pupil only perseverance in order that he may achieve excellence. The mechanical principles are few, and have been laid down in a few words; and, as nearly all students have felt, in the earlier period of their art work, the necessity of some general rules to guide them in the composition and arrangement of color, I have given, without entering into any profound discussion of the subject, a few of its practical precepts, which, it is hoped, will prove helpful. While this book does not treat of art in a very broad way, yet I am convinced that those who follow its teachings will, through the work they accomplish, be soon led to a higher appreciation of art. Although this kind of work does not create, yet who will say that it will not have accomplished much if it shall prove to be the first step that shall lead some student to devote his or her life to the sacred calling of art? It has been said that artists rarely, if ever, write on art, because they have the impression that the public is too ill-informed to understand them-that is, to understand their ordinarily somewhat technical method of expression. If, therefore, in the following pages I may sometimes seem to take more space and time for an explanation than appears necessary, I hope the student will overlook it, as I seek to be thoroughly understood. My hope with reference to this work is that it may prove of actual value to the earnest student in helping him reach the excellence which is the common aim of all true artists. J. A. Barhydt.