APPLIED SCIENCE, VOL. 25

Incorporated With Transactions of the University of Toronto Engineering Society, February 1913Thus it is Shown that application of compressed air underground has not only called into being anew type of man, the sand hog (the term applied to the man who Works in the air chamber) but it has created a disease.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.