Hydron blue G and R, patented paste 20% and powder (1911)
Cassella Color Company · New York · leaf 48
rinsed, and bleached fora few hours in the customary manner with hypochlorite of soda %—1° Tw.,rinsed again once or twice, and then soured off for 20 to 30 minutes in hydro-chloric acid of %° Tw. Then treat the goods in a fresh bath containing %—\y2 oz bisulphiteof soda per 10 gallons, leave… … 72
Dyes and dyeing
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![An illustration from [Gazes, 1890-1901; collection Roubaudi et Fils] (1901)](https://img.insideoutlibrary.com/img/200/ia-gazes1890190100elem-87-190.webp)
