Excerpt from The Printer's Dictionary of Technical Terms: A Handbook of Definitions and Information About Processes of Printing, With a Brief Glossary of Terms Used in Book Binding This method includes copperplate and steel plate engraving, copperplate etching, dry point engraving, aquatint engraving, mezzo tint engraving, and photo-gravure. 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.