INDIGO EFFECTS.

Indigo Style. (Second Stage).

For a green colour he takes 44 gals, of indigotin precipitate; 18 lbs.powdered gum Senegal, stirring till dissolved; 11 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 8° Tw., or silicate of potash, at 12 0 Tw., to which 1 oz.powdered chalk is added per gal. ; or into a mixture of silicate of soda or silicateof potash, at 8° Tw., with carbonate of potash at 12 0 Tw. This bath is heatedto 90° F. in a cistern fitted with rollers at top and bottom. The pieces pass

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Indigo Style, with other Colours. (Third Stage).