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Excerpt from Elementary Anatomy, Physiology and Hygiene for Higher Grammar Grades Through this means one can best show the interdependence of plant and animal kingdoms, and the unity and harmony of nature. Attention is called to the experiments suggested and described in the text. The appliances and material suggested are readily procurable; and the experiments described may easily be performed by any bright and energetic teacher. Taught in this way physiology becomes a living and intensely interesting science. The problems given for solution by the pupils will tend to fix indelibly the hygienic principles involved in them. Especial attention is called to the lessons on Domestic Economy. This work has never failed to arouse the interest not only of the pupils, but of parents also, their feeling being that the school work in physiology is being made practical as life itself is and must be. This chapter and that on plant physiology is the work of Mrs. Winfield S. Hall. The author is indebted to Professor Wilson of Columbia University, to Professor Piersol of the University of Pennsylvania, and to Professor Williams of the University of Buffalo for several valuable figures. Acknowledgment is due also to Messrs. Lea Brothers, Philadelphia, for permission to reproduce several figures from the author's Text-book of Physiology, of which they are the publishers. 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.