Excerpt from Some Early Treatises on Technological Chemistry This is the earliest edition of the collection that I have seen, and I judge it to be the first, because I have found no reference to any one before it, and because it contains less matter than any of its successors. The book is not mentioned by any authority except Schmieder, * who says. That it was written by George Agricola, the metallurgist, and that it was printed at Cologne, but there is no evidence in support of these statements in the book itself, and both of them are very questionable, if not demonstrably erroneous. 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.