Excerpt from Sixteenth Annual Report of the Illinois Society of Engineers and Surveyors: Being the Proceedings of the Society at Its Sixteenth Annual Meeting, Held at Bloomington, Ill., January 23, 24, 25, 1901 Knight, philip C Drainage Engineer and Surveyor, Pontiac ketchum, M. 8 Assistant Professor of Civil Engineering. 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.