Excerpt from Investigations of Zirconium With Especial Reference to the Metal and Oxide: Historical Review and Bibliography The Bureau of Mines, in carrying out one of the provisions of its organic act - to disseminate information concerning investigations made prints a limited free edition of each of its publications. When this edition is exhausted, copies may be obtained at cost price only through the Superintendent of Documents, Government Printing Office, Washington, D.C. The Superintendent of Documents is not an official of the Bureau of Mine. His is an entirely separate office and he should be addressed: Superintendent of Documents, Government Printing Office, Washington, D.C. The general law under which publications are distributed prohibits the giving of more than one copy of a publication to one person. The price of this publication is 25 cents. Persons desiring for lecture purposes the use, free of charge, of lantern slides of the illustrations in this publication should make request of the Director of the Bureau of Mines, Washington, D.C. 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.