The Painter And Varnisher S Guide

Excerpt from The Painter and Varnisher's Guide, or a Treatise, Both in Theory and Practice, on the Art of Making and Applying Varnishes: On the Different Kinds of Painting, and on the Method of Preparing Colours Both Simple and Compound The dreams of the credulous alchemists were not entirely useless to the chemists who succeeded them: in the same manner, this ephemeron enthusiasm was not lost to society. 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.

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1804 edition. Excerpt: ... the operation is managed with care; or an oil, the specific gravity of which does not exactly follow the order of the division of the product (4 and 7); that the light alone, by the effect of a particular combination, the mode of which can only be presumed, becomes the principle of this density, so essential to the solution of the copal (7, 8, 13, 14, 15 and 16), that this essence of turpentine, which at the moment of its rectification has exercised no power over the copal, may by the mere effect of the influence of the light dissolve, after a certain time, the pulverized copal which has been precipitated from it untouched; that the copal even-increases its energy, since the essence can dissolve a larger quantity of it than when it is exposed alone, and without any mixture of opal, to the same influence of the light (5, 6 and 8). These results prove also," that the more the essence (c)f turpentine is disposed to be decomposed, and to furnish acid water, in the cour&e of the distillation, or during the time of the process for making the varnish, . the less-proper it for the solution o copal; because this free acid does not fail to react on the oil, and to communicate to the whole mass a tint, which it ought f not to possess (11)-; in a word, that this oil is siisceptible of giving a concrete volatile acid salt, contained in certain balsamic substances (1, 2, and 15). The existence of that salt, which places turpentine among the balsams, according to the new definition of Fouxcroy, was at this time unknown. Some authors assert that they have been able to dissolve copal in essence of turpentine J this ehemkaj property of essence, however, was considered as very problematical. The remembrance of it even-seemed to be.