Excerpt from The Nature of Ore DepositsIn presenting an English edition of Professor Beck's 'lehre von den Erzlagerstatten, ' for which he has generously given his consent, a few words of explanation are necessary. I was originally asked by the publishers to practically rewrite the book from an American standpoint, giving greater prominence to American ore deposits. This was abandoned because it in volved serious abridgement of the descriptions of important foreign locali ties, descriptions which make the work especially valuable to American en gineers and geologists. I have, however, in most instances, consulted the original authorities, and written many new descriptions of American ore de posits, especially where, by reason of personal study or of recent detailed scientific investigation made since Professor Beck's book was issued, such a course seemed advisable. For such additions and changes I alone am te sponsible.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.

comThis 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.