Excerpt from Ground Water for Irrigation in the Vicinity of Enid, Oklahoma The Tertiary deposits in the vicinity of Enid range from a thin layer to beds 60 feet thick. In wells sunk into these deposits three classes of material can generally be distinguished - first, a layer Of soil, varying in different localities from sand to heavy clay or gumbo, depending upon the character of the underlying material from which it has been derived; second, a layer of yellow, reddish, or bluish clay, more or less sandy in different places and grading into the overlying soil; and third, material composed of well-rounded quartz fragments, varying from quicksand to fine gravel, usually coarsest near the bot tom. Underlying this is the red shale, or keel, which forms the bedrock in this whole region. 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.