Excerpt from Annual Report of the Committee on Public Hygiene: Read Before the Northern Medical Association of Philadelphia, November 20th, 1851 In some of these narrow and confined streets and alleys where resides a crowded and filthy population, the exhalations from the gutters are extremely nauseous and injurious to health. 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.