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Excerpt from Commercial Fertilizers: Report for 1950 The amended law requires that all guarantees of fertilizer ingredients other than phosphoric acid and potash must be expressed as the elemental form; for instance, magnesium and boron must be guaranteed as per centages 'of magnesium and boron, not magnesium oxide and borax. The law also specifies that guarantees of other ingredients than ni trogen, phosphoric acid and potash may be made only by permission of the 1 director of The Connecticut Agricultural Experiment Station, but it will be the policy of this Station to consider the filing of an application for registration as a request for such permission, and per mission will normally be withheld only in the case of' a fertilizer con taining such a quantity of an added secondary fertilizer component as would appear to make the fertilizer likely to be harmful to the crops for which it is designed. 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.