Excerpt from Applied Science, Vol. 25: Incorporated With Transactions of the University of Toronto Engineering Society; Dec. 1912 Canada are floored with extensive sheets of clay, the most notable. Being the great plain of the St. Lawrence in the province of Quebec, where clay is found up to 100 feet in thickness. Clay beds of smaller extent are also found at the higher levels up to 700 feet above the sea, where they occur chiefly as terraces, bordering streams. A very extensive Sheet of clay, alto gether detached from the southerly areas, is found along the line of the National Transcontinental Railway in Northern Ontario and Quebec. Surface clays occur rather widespread in the provinces of Mani toba, Saskatchewan, and Alberta, especially in the Red River and Saskatchewan valleys. 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.