Contributions From The Sanitary Research Laboratory And Sewage Experiment Station 1910 Vol 6 Classic Reprint

Excerpt from Contributions From the Sanitary Research Laboratory and Sewage Experiment Station, 1908, Vol. 4 Since that time increasing experience has only confirmed and strengthened the same conclusion. Civilization advances after all but slowly; customs tend to become fixed and crystallized, and the sew ages of cities, excepting as regards concentration, show no great or fundamental progressive changes in chemical, physical, or biological characteristics. Here clearly is no will-o'-the-wisp eluding our grasp because receding as we draw near, but on the contrary a problem which, as cities grow and industries become established and customs settled, tends everywhere to become more and more similar. 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.