For two and one-half pounds of feathers boil two and one-half pounds of
fustic for one-half hour with three quarts of water, pour the decoction
off and boil the chips again for one-half hour with three quarts of
water, mix the two decoctions and strain. Add three ounces alum and
one and one-half ounces tartar, enter the feathers well scoured and
rinsed, and dye to shade at 170° F. Or, prepare the dyestuffs of
decoction of fustic or turmeric, and indigo carmine, according to
shade, enter at 170° F., work for one-half hour while slowly raising
the temperature to near the boiling point, and dye to sample; lift,
rinse, squeeze and starch as usual.