Excerpt from Commercial Sicilian Sumac: Including Notes on the Microscopical Examination of Sicilian Sumac and Its Adulterants Sicilian sumac is the best vegetable tanning material known for pale colors and soft tannage, and is consequently extensively used for moroccos, roans, skivers, etc., and for brightening the color of leather tanned With dark materials. An extended investigation by a committee of the Society of Arts has shown Conclusively that sumac-tanned leathers are less likely to be attacked by light and gas ...
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Excerpt from Commercial Sicilian Sumac: Including Notes on the Microscopical Examination of Sicilian Sumac and Its Adulterants Sicilian sumac is the best vegetable tanning material known for pale colors and soft tannage, and is consequently extensively used for moroccos, roans, skivers, etc., and for brightening the color of leather tanned With dark materials. An extended investigation by a committee of the Society of Arts has shown Conclusively that sumac-tanned leathers are less likely to be attacked by light and gas fumes, and hence better suited for use in bookbinding than any other known vegetable tannage. As good masculino, or Sicilian mountain sumac, contains from 25 to 35 per cent of tannin Which is absorbed by hides, it is a very high'grade and desirable tanning material, commanding a high price. Consequently it is adulterated to a considerable extent, and much complaint has arisen during the past three or four years both from importers and tanners about the mixing of sumac leaves With stems or other lower-grade and darker-colored substances, an adulteration Which not only affects the material itself, but also darkens greatly the leather tanned. In yiew of these facts it has been deemed advisable to make a careful examination of imported Sicilian sumac. Although mineral tanning has largely replaced vegetable tanning in the production of morocco, the importations of foreign sumac have remained about the same for a number of years, as shown by Table I. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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