Excerpt from The Rothamsted Experiments on the Growth of Wheat, Barley, and the Mixed Herbage of Grass Land Having had occasion to study somewhat closely the work of the Rothamsted investigators, it occurred to me that their valuable memoirs, dealing as they so largely do with actually ascertained results, might be advantageously condensed into the form of a text-book. Hence arose the present volume which, though it is concerned with a portion only of the many questions that have been brought within the range of experimental inquiry at Rothamsted, yet deals with subjects of first class importance, equally in their scientific bearing as in their economic aspect. To the student the discussion of concrete results should prove at least as useful as the consideration of abstract assertions, whilst it is possible that it may be even more suggestive. In the endeavour to make each subject as far as possible complete in itself, a certain amount of repetition has been unavoidable. Many questions, again, which are but lightly touched upon in these pages, are more fully dealt with in other of the Rothamsted memoirs than those which the writer has laid under contribution. Even as this work is passing through the press a fresh memoir issuing from Rothamsted throws further light upon the classical inquiry as to the sources of the nitrogen of vegetation. 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.