2692. Cloth (Scarlet)
Three quarters of a pint of a tin mordant, made by dissolving three pounds of tin in sixty pounds of hydrochloric acid, is added to every pound of lac dye, and digested for six hours. To dye twenty-five pounds of cloth, a tin boiler of seventy-five gallons capacity should be filled nearly full with water, and a fire kindled under it. When the heat is 150° Fahr., half a handful of bran and two ounces of tin mordant are to be thrown into it. The froth which arises is skimmed off, the liquor is made to boil, and two pounds and three quarters of lac dye, previously mixed with a pound and three quarters of the solvent, and fourteen ounces of the tin solvent, are added.
Immediately afterwards two pounds and three quarters of tartar, and a pound of ground sumach, both tied up in a linen bag, are to be added, and suspended in the bath for five minutes. The fire being withdrawn, five gallons of cold water and two pints and three quarters of tin mordant being poured into the bath, the cloth is immersed in it. The fire is then replaced, and the liquid made to boil rapidly for an hour, when the cloth is removed and washed in pure water.
2693. Cloth (Yellow)
Use No. ii. for calico. Quercitron and weld produce a solid yellow; fustic a very brilliant tint; while turmeric yields a less solid yellow.
2694. Feathers (Black)
Use the same as for cloth.