. A practical handbook of dyeing and calico-printing. With eleven page-plates, forty-seven specimens of dyed and printed fabrics, and thirty-eight woodcuts . ded, in which £ lb. sugar has been previously dissolved. To this,solution he adds 2\ pints of muriatic acid, at 320 Tw., or of ordinarysulphuric acid, previously diluted with 1 pint of water, and allowed to standtill clear and cold; or 3 quarts of acetic acid at 8° Tw. The indigotin mayalso be precipitated by a mixture of protochloride of tin solution (doublemuriate), at 1200 Tw., with any of the acids above named, taking \ pint of
. A practical handbook of dyeing and calico-printing. With eleven page-plates, forty-seven specimens of dyed and printed fabrics, and thirty-eight woodcuts . ded, in which £ lb. sugar has been previously dissolved. To this,solution he adds 2\ pints of muriatic acid, at 320 Tw., or of ordinarysulphuric acid, previously diluted with 1 pint of water, and allowed to standtill clear and cold; or 3 quarts of acetic acid at 8° Tw. The indigotin mayalso be precipitated by a mixture of protochloride of tin solution (doublemuriate), at 1200 Tw., with any of the acids above named, taking \ pint ofof the tin solution to half the quantities of acids given above. Of all theseprecipitants, acetic acid alone is preferable. The indigotin precipitate isfiltered through a deep conical filter, leaving as small a surface exposed to theair as possible. The pulp from the above quantities, when filtered, should measure about 1 gal. To make a blue colour for printing the patentee takes 4 gals, of the above indigo-precipitate and 14 lbs. gum Senegal in powder, stirring till dissolved ; the colour when strained is ready for printing. • INDIGO EFFECTS. 591. Indigo Style. (Second Stage). For a green colour he takes 4^ gals, of indigotin precipitate; 18 gum Senegal, stirring till dissolved; n lbs. of nitrate of lead and11 lbs. white sugar of lead, both in powder, are then added ; the mixture isstirred till all is dissolved and strained. Compound colours are made by mixing the blue and green colours witheach other, or with the ordinary mordants for dyeing. With the blue andgreen above described, and with the ordinary iron and alum mordants (as usedfor madder and garancin work), the inventor prints calico, and after cooling, agesthe pieces for one night. They are then fixed by passing them into a solutionof silicate of soda at 8D Tw., or silicate of potash, at 120 Tw., to which 1 chalk is added per gal.; or into a mixture of silicate of soda or silicateof potash
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectdyesanddyeing, bookye
