and other similar tanning matters such preparation already contains tannic acid but because the sub dye liquors in these and other cases revealed the fact that the coloring matter was very largely precipitated the leather in an insoluble form. Both methods were tried with the result that the Dr. Cook's Arctic Expedition. CARS. VIADUCT IN EDEN PARK CINCINNATI FOR STREET -RAILWAY, scientific american, 1894-07-21
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