Please see the [Transcriber’s Notes] at the end of this text.
New original cover art included with this eBook is granted to the public domain.
POLITICAL AND COMMERCIAL
GEOLOGY
AND THE
WORLD’S MINERAL RESOURCES
McGraw-Hill Book Co. Inc.
PUBLISHERS OF BOOKS FOR
Coal Age ▽ Electric Railway Journal
Electrical World ▽ Engineering News-Record
American Machinist ▽ Ingeniería Internacional
Engineering & Mining Journal ▽ Power
Chemical & Metallurgical Engineering
Electrical Merchandising
POLITICAL AND COMMERCIAL
GEOLOGY
AND THE
WORLD’S MINERAL RESOURCES
A SERIES OF STUDIES BY SPECIALISTS
J. E. SPURR, Editor
First Edition
Second Impression
Royalties received from the sale of this book will be
assigned to an institution of learning to finance
further studies along the lines followed in the volume.
McGRAW-HILL BOOK COMPANY, Inc.
NEW YORK: 370 SEVENTH AVENUE
LONDON: 6 & 8 BOUVERIE ST., E. C. 4
1920
Copyright, 1920, by the
McGraw-Hill Book Company, Inc.
THE MAPLE PRESS YORK PA.