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A practical treatise on dyeing and calico-printing : including the latest inventions and improvements : also a description of the origin, manufacture, uses, and chemical properties of the various animal, vegetable, and mineral substances employed in these arts : with an appendix comprising definitions of chemical terms, with tables of weights, measures, thermometers, hydrometers, &c. (1860)

Parnell, Edward A. (Edward Andrew), Macfarlane, Robert, 1815-1883 · New York : John Wiley · leaf 237

An illustration from A practical treatise on dyeing and calico-printing : including the latest inventions and improvements : also a description of the origin, manufacture, uses, and chemical properties of the various animal, vegetable, and mineral substances employed in these arts : with an appendix comprising definitions of chemical terms, with tables of weights, measures, thermometers, hydrometers, &c., 1860, leaf 237
211 BLEACHING OF COTTON. correctly weighed. The acid is then Fig. 3. … that every two grains of the test acid are equivalent to one grain of pure soda, and that twenty-five grains of soda ash required twenty grains of acid to neutralize it, the real alkali present will be ten. Now 25 being the fourth of 100, the 10 is multiplied by 4, giving 40 as the per centage of…

Dyes and dyeing · Calico-printing · Coal-tar colors

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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