Excerpt from Soil Survey Manual The Soil Survey Manual is intended for use by soil scientists engaged in soil classification and mapping. Attention is directed primarily to problems and methods of making and interpreting detailed basic soil surveys in the United States and territories. The earlier edition,1 published in the autumn of 1937, reflected the developments growing out of the ideas, work, and publications of hundreds of scientists since the beginning of the United States Soil Survey in 1899. Substantial progress has been made since 1937 in the soil survey itself and in related fields of soil research. Further, soil surveys are now used by more people, in more ways, and, above all, with more precision than formerly. 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.