Excerpt from On the Preparation of Printing Ink: Both Black and Coloured Even the limited knowledge that is possessed by the very few manufacturers Of this article Of the properties required in its composition, is carefully guarded as a profound secret; SO that the printer who may be desirous Of having Ink Of a very superior quality is not able to form it de novo, for want Of information on the sub ject, but is obliged to take the Ink Of com merce as a foundation to work upon, and im prove that which he thus tacitly: acknowledges is Of an inferior quality, and to attempt to change that which is bad inherently to excel lence - the thing is impracticable. 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.