BOG GREEN.
This color is preferably dyed upon unbleached gray feathers. Scour and rinse them, prepare a decoction of green walnut husks or of sumac; lay the feathers down in it for two hours, working them from time to time; then add some decoction of logwood and dye to shade at 170° F., or indigo carmine and dye to shade while slowly raising the temperature to near the boiling point. Rinse, squeeze, starch and dry.