Cheap Substitute for Gum Tragacanth.

Practical Magazine 20, 1876

(Chemistry applied to the Arts, Manufactures, &c.
Dyeing, Calico Printing, Bleaching, Tanning, and Allied Subjects.)

Herr C. Boschan, of Vienna, has ascertained by experiment that a combination of twenty parts by weight of starch, six parts of glue, and two of glycerine boiled in water, perfectly answers every purpose of tragacanth, and can be used with equal advantage. For finishers of textile fabrics it may be interesting to know also, that a mixture of six parts of starch and three of glycerine gives a perfectly transparent, colourless finishing, which till now has not been discovered, as the yellow tint of glazed linen and shirtings abundantly proves. This finishing, through the absence of glue, is far cheaper than the ordinary article, without being at all inferior to it in appearance.

- Stummer's Ingenieur.

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