Excerpt from Original Communications, Eighth International Congress of Applied Chemistry, Vol. 15: Washington and New York, September 4 to 13, 1912; Section VII, Agricultural Chemistry A map of Nebraska showing the loess region (unshaded), the precipitation, the evaporation, the western limit of the glacial drift and the location of the fields sampled. The normal annual precipitation at the towns near which the samples were taken, as well as their approximate longitude and elevation above sea level are given in Table 1. 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.