According to Bancroft, Quercitron is the yellow above all others for dyeing greens. He says:—
"The most beautiful Saxon greens may be produced very cheaply and expeditiously by combining the lively yellow which results from Quercitron bark, murio sulphate of tin and alum, with the blue afforded by indigo when dissolved in sulphuric acid, as for dyeing the Saxon blue".
For a full bodied green he says "6 or 8 lbs. of powdered bark should be put into a dyeing vessel for every hundred lbs. wool with a similar quantity of water. When it begins to boil, 6 lbs. murio-sulphate of tin should be added (with the usual precaution) and a few minutes afterwards 4 lbs. alum: these having boiled 5 or 6 minutes, cold water should be added, and then as much sulphate of Indigo as needed for the shade of green to be dyed, stirring thoroughly. The wool is then put into the liquor and stirred briskly for about ½ hour. It is best to keep the water just at the boiling point."
Recipes for Dyeing Green.
1). Bottle Green for Silk with Fustic. (5 lbs.) Dissolve 2 lbs. alum and 1 lb. copperas in water; work the silk in this for ½ hour; wash in warm water. Work for ½ an hour in a decoction of 6 lbs. Fustic. Lift, and add 2 oz. Indigo Extract. Work 20 minutes. Wash and dry.
2). Green for Wool with Fustic. ½ lb. of wool is mordanted with ⅛ oz. chrome and ⅛ oz. Cream of Tartar for ½ an hour to 1 hour. Soak overnight in water, 3 oz. Fustic and 2½ oz. logwood, and boil for 2 hours. Strain, and enter wool. Boil for 2 hours.
3). Green for Linen with Larch Bark. Mordant 4 lbs. linen with ½ lb. alum. Boil for 2½ hours; wring out but do not dry. Boil up a quantity of larch bark and boil linen in this for 2½ hours.
4). Fustic Green for Wool. (50 lbs.) Mordant wool with 11 lbs. alum. Soak 50 lbs. Fustic over-night, and boil up. Enter the wool and boil for half-an-hour or more. Add Extract of Indigo in small quantities at a time, till the desired colour is got.
5). Saxon Green for Wool. Mordant the wool with alum and tartar for half-an-hour; it is then taken out and aired, but not washed. The bath is refreshed with cold water, and half the amount of the solution of Indigo which is to be used is well mixed in. The wool is entered and rapidly stirred for 5 or 6 minutes, without boiling. It is taken out and the rest of the Indigo solution is well mixed in. The wool is put in and boiled for ten minutes; then taken out and cooled. The bath is then three-quarters emptied and filled up with a decoction of fustic. When the bath is very hot, the wool is put in until the desired shade of green is got.
6). Green with Quercitron for Wool. Dye the wool blue in the Indigo vat. Wash well. For 100 parts of wool, put 3 parts of chalk and 10 or 12 of alum. Boil the wool in this for 1 hour. Then to the same bath, add 10 or 12 parts of Quercitron, and continue the boiling for ¼ hour. Then add 1 part of chalk, and this addition is repeated at intervals of 6 to 8 minutes till a fine green colour is brought out.