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The manufacture of alum and the sulphates and other salts of alumina and iron; their uses and applications as mordants in dyeing and calico printing, and their other applications in the arts, manufactures, sanitary engineering, agriculture, and horticulture (1901)

Geschwind, Lucien, Salter, Charles Thomas · London, Scott, Greenwood & son; New York, D. Van Nostrand co. [etc., etc.] · leaf 265

An illustration from The manufacture of alum and the sulphates and other salts of alumina and iron; their uses and applications as mordants in dyeing and calico printing, and their other applications in the arts, manufactures, sanitary engineering, agriculture, and horticulture, 1901, leaf 265
The gases are mixed in the part CD, which carries a movable ajutage E ; and by means of the cocks A and B the dimensions of the flame can be controlled by the workman, and an excess of hydrogen maintained so as to preserve the reducing character of the flame. The hydrogen is furnished by a leaden… … FIG. 164.— Bellows. acid, and communicates with A by means of the pipe D, which dips into a cup L. The pipe D is provided with a branch E, which is closed by a plug F while the apparatus is in work. The hydrogen generated in A escapes through the neck G into a pipe H, which discharges it through…

Alum · Sulphates · Dyes and dyeing · Chemistry, Technical

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