Excerpt from Elements of Sanitary Engineering While this volume is primarily intended for the use of students in engineering colleges, its plan and arrangement are materially different from those of other text books on water supply and sew erage. The effort has been made to present the subject Clearly' and concisely in the smallest possible space, giving greater prom imenee to fundamental principles than to details of construction and operation. It is also hoped that the book may prove useful to municipal officers who have supervision of sanitary works as well as to the public in general, for it presents the guiding princi ples which should be observed in order to secure a pure water supply or an efficient system of sewerage. At the end of each Chapter are given exercises and problems for students. These require that the student shall consult cyclo pedias, books, and engineering literature in order to obtain information regarding the details of special topics or of the con struction of plants. It will be found highly advantageous to have several of these exercises presented and discussed at every class recitation, each being presented by a different student while the Class takes notes and joins 'in the discussion. In this way each student will, during the course, become acquainted with engineer ing indexes, books, and journals, and learn how to use them in finding the assigned topics, while the oral presentation of the facts and conclusions to the Class gives him valuable training. 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.