Excerpt from Journal of the Association of Engineering Societies, Vol. 48: January to June, 1912 If the above figures are stated as the number of cases and deaths from typhoid fever per hundred thousand of population the effect of a purified water supply is even more striking. Number of Cases and Deaths from Typhoid Fever per 100 000 of Population. 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.