A. WITHOUT COAL-TAR CoLouns.—.Red : (a) 4 oz. ground Brazil wood, and 3 pints vinegar, boiled till reduced to 1 pint, and 3 oz. powdered rock alum added. (b) I lb. raspings of Brazil wood, infused in vinegar for 2-3 days ; boil the infusion for 1 hour over a gentle fire, and filter while hot ; put it again on the fire, and dissolve in it, first, oz. gum arable, then oz. alum and white sugar. (c) Boil 2 oz. Brazil wood in 32 oz. water ; strain the decoction ; add oz. chloride of tin, and 1 dr. powdered gum arabic; then evaporate to 16 fl. oz. (d) Dissolve 1 dr. carmine in dr. liquid ammonia, sp. gr. ; dissolve 20 gr. powdered gum arabic in 3 oz. water ; mix the two solutions. (e) Mix 2000 parts Brazil wood, 3 salt of tin, 6 gum, and 3200 water ; boil till reduced to one-half, and filter. (f) 2 parts Brazil wood, alum, cream of tartar, 16 water ; boil down to one-half, and filter ; add part gum. (g) To an ammoniacal solution of cochineal, add a mixture of alum and cream of tartar, till the required tint is obtained. (h) Digest 1 oz. powdered cochineal in pint hot water ; when quite cold, add pint spirit of hartshorn ; macerate for a few days, then decant the clear portion. (i) Dissolve 20 gr. pure carmine in 3 fl. oz. liquid ammonia ; add 18 gr. powdered gum.
Purple : (a) To a decoction of 12 parts Campeachy wood in 120 parts water, add 1 part sub acetate of copper, 14 parts alum, and 4 parts gum arable ; let stand for 4-5 days. (b) To a strong
decoction of logwood, add a little alum, or chloride of tin.
Violet : (a) Boil 8 oz. logwood in 3 pinta water, till reduced to pint ; strain, and add oz.
gum, and 2i. oz. alum. (b) Mix 1 oz. cudbear, I+ oz. pearlash, and 1 pint hot water ; allow to stand for 12 hours ; strain, and add about 2 oz. gum. If required to keep, add 1 oz. spirit of wine.
Blue : (a) Dissolve 2-3 oz. sulphate of indigo in 1 gal. water. (b) Rub together 1 oz. oxalic acid and 2 oz. fine Prussian blue, and add 1 qt. boiling water ; the excess of iron in the Prussian blue must first be removed by a strong mineral acid ; then wash in rain water. (c) 2 oz. Chinese blue, 1 qt. boiling water, 1 oz. oxalic acid ; dissolve the blue in the water, and add the acid ; it is ready for use at once.
Green : (a) Calcine acetonitrate of chrome ; dissolve the green powder in sufficient water. (b) Dissolve sap green in very weak alum water. (c) 2 oz. verdigris, 1 oz. cream of tartar, pint water ; boil till reduced to one-half, and filter.
Green-black : Boil 15 parts bruised galls in 200 parts water for about 1 hour; strain ; to the liquor, add 5 parts sulphate of iron, 4 fine iron shavings, and a solution of a pint powdered indigo in 3 pinta sulphuric acid. This ink flows readily ; it writes green, but turns black after a few days.