Excerpt from How We Live: Or, the Human Body, and How to Take Care of It; An Elementary Course in Anatomy, Physiology, and Hygiene The manifest importance of the subject is the why of the book. The how remains to be considered. The book is elementary, not a scientific treatise for advanced students. Beginning with Obvious relations, its method is inductive, each new topic growing out of the one that precedes it. It aims to present the laws of life in such a practical and reasonable way that they will become a guide to living. In the treatment of each topic, function is considered before structure. The first step is to show that, for pur poses of life and growth, there is a need. Then, in answer to the query as to what is done to satisfy the need, a full description is given Of the organs used and the methods employed. This properly subordinates structure to use, and shows the true relations of all the agencies of life. The limitations set by the term elementary have forbidden minute details, abstruse discussions, ultimate analyses, and the general use of technical terms. All these are left for the high-school Physiology. Where technical terms are introduced in marks of parenthesis, they are not intended for the pupils to memorize. 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.