Book Description

Excerpt from Evaporation and Soil Moisture in Relation to the Succession of Plant Associations: A Dissertation Submitted to the Faculty of the Ogden Graduate School of Science in Candidacy for the Degree of Doctor of Philosophy In' most instances no correction has been made for errors caused by rainfall, although during showers some water undoubtedly passes into the porous cup and into the reservoir, because it was thought that the amount of variation thus produced 'would be the same for all stations within so limited an area, and hence the com parative relation of results would remain unchanged. This assump tion has been largely verified by brown using 'an atmometer with a rain-correcting valve, and also by the experience of the writer by maintaining control instruments with the valves. The record for the prairie association for 191 1 was wholly, and that for the oak-hickory forest for 1912 was partially, made with rain correcting atmometers. 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.