Excerpt from Pumps and Hydraulics, Vol. 2 of 2 The owner of a great tannery had once an improvement in making leather proposed to him by a foreman, but the mer chant could not comprehend it even with the most earnest verbal explanation. As a last resort he said, put it in writing so that I can study it out. This was done and the change after an examination of the paper was made as advised. SO in these volumes much important information is written and printed that it may be studied out. 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.