Excerpt from Soils of the Eastern United States and Their Use XXVII: The Houston Black Clay The surface Of the Houston black clay is prevalently broadly rolln to undulating, 'with no very steep slopes and with limited areas of absolutely level land lying between the ridges or undulations. The surface drainage is usually good, only the more level areas suffering in this respect. Erosion is not a serious problem except along the margins of streams which cut across the formation from which it is derived, and along their principal tributaries. Such areas occupy only a small percentage of the total extent of the type. 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.