Excerpt from Agricultural Arithmetic Mass or magnitude is the simme notion of size. It is indefinite and always suggests the question, How much? Measurement is the process of determining how much there is of the magnitude. The process of measurement consists in determining the number of units it contains. A unit is a single thing or a portion of a magnitude into which it is divided in the process of measurement. Number tells how many units there are in a given mass or magnitude. Quantity is the complete answer to the question how much there is of the mass or magnitude that is measured. 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.