Excerpt from Water Softening and Treatment: Condensing Plant, Feed Pumps and Heaters for Steam Users and ManufacturersIn dye works the most delicate colours cannot be obtained except with soft water, and in the tanyard the presence of lime carbonate in the hides destroys tanmu by converting it into lime tannate, and this is not only a loss of tannin but detracts from the quality of the leather, which is hardened and rendered harsh in feeling through the choking of its substance with mineral matter.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.