Excerpt from The National Geographic Magazine, 1897, Vol. 8: An Illustrated Monthly Geographic Literature (magnetic Declination in the United States, Gannett Carpenter's Geographical Reader; Studies in Indiana Geography, Dryer) Modification of the Great Lakes by Earth Movement; by G. K. Gilbert. The Toronto Meeting of the British Association for the Advancement of Science; [john hyde]. 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.