Excerpt from The Life of the Pleistocene or Glacial Period, as Recorded in the Deposits Laid Down, by the Great Ice Sheets The writer was fortunate in being able to follow the excavation of this canal foot by foot and thus to secure fresh exposures. During a period of two years the entire length was carefully surveyed with the results described in the pages that follow (part I). The new calumet-sag Channel, draining the southeastern part of the city, was also studied, but in no such detail as was the North Shore Channel. It is greatly to be regretted that this canal, pre senting quite as important data as did the North Shore Channel, could not have been given equally as exhaustive study. The small amount of time available was used to the utmost and important data were obtained. 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.