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Adulteration of Cochineal

boiling weld, or quercitron baik, in water, Genuine cochineal has a specific gravity of and adding alum and chalk in a pasty state. 1.25; it is commonly increased in weight by 2685. Rose Pink. Boil 6 pounds slightly moistening it with gum gum water, and Brazil-wood and 2 pounds peach-wood in then rouncing it in a bag, first with sulphate water, with + pound alum, and pour the of baryta, and then with finely powdered strained decoction on 20 pounds sifted whibone-black. In this way its specific gravity is raised to 1.35, by introducing about 12 per cent. of useless matter. tening.