Excerpt from A Text-Book of Deductive Logic: For the Use of Students The present work has been mainly prepared for the use of students. An attempt has been made to explain clearly and concisely the fundamental doctrines of Deductive Logic. The work consists of three Parts, with an Introduction and an Appendix. The first chapter of the Introduction treats, in the first place, of the definition and province of Logic, and then proceeds to the special subject of the book and lays down its scope and limits. The second chapter explains the fundamental principles of Deductive Logic. The three parts then treat successively of Terms, Propositions, and Deductive Reasoning. In the chapter on Immediate Inference, a full account is given of the generally accepted forms. The method of demonstration by circles, so extensively employed in this work, for proving both immediate and mediate inferences, is not new. "The use of circles," says Ueberweg, "as an aid in the demonstration of the doctrine of Syllogism, especially in Syllogistic proper, has been referred by modern logicians (e. g. by Mass, J. D. Gergonne, Bachmann, and Bolazano) to Euler. 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.