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Excerpt from Practical Mathematics By Practical Mathematics is meant the application of the abstract doctrines of general Mathematics to many matters in the business of life. To it belong the methods of constructing figures, of measurement, and all but the simplest computations. Considered in this light, it may be said that a knowledge of Practical Mathematics, while calculated to be useful to all, is indispensable to those whose professions involve measurement, computation, and construction. In preparing the present treatise, considerable pains have been taken to explain, in the clearest manner, the method of solving the numerous problems. The rules have been expressed as simply and concisely as possible in common language, as well as symbolically by algebraic formulas, which frequently possess, on account of their conciseness and precision, a great advantage over ordinary language: they have also in many instances been given logarithmically, on account of the facility and expedition of logarithmic calculation. To understand the algebraic formulas, nothing more is necessary than a knowledge of the simple notation of algebra; the method of computation by logarithms is explained in the Introduction to the Logarithmic Tables of this Educational Course. As the work is professedly practical, very little matter of an abstruse nature has been inserted; and for the demonstrations of the methods prescribed, and the algebraical principles employed in these demonstrations, reference is made to the treatises of Geometry and Algebra already published in the Educational Course. When the principles of any of the rules are not to be found in these treatises, special demonstrations have been given, unless when these would have been too tedious or abstruse. 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 w