Excerpt from Chemical Investigations of the Tobacco Plant: The Effect Upon the Composition of the Tobacco Plant of the Form in Which Nitrogen Is Supplied A priori it would seem that ammonium salts are more readily available for use in the synthesis of tissue components than nitrates since there is little doubt that nitrates must be reduced to ammonia, or to substances of an allied nature, before the nitrogen can be assimilated. Such differences may find their expression in many ways, but one obvious difference would be in the disposition of the plants grown with nitrogen supplied in one or the other form to store the excess of absorbed nitrogen without chemical change. It is well known that many plants store nitrate nitrogen, sometimes in surprising quantities. Storage of substantial amounts of ammonium nitrogen is, however, a much less commonly encountered, although by no means rare, phenomenon. 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.