229. Purple

229.    Purple. Work the goods half an hour in a bath with 1 ounce bichromate of potassa, 1 ounce alum; lift out and wash in cold water; and then work half an hour in a bath with 2 pounds logwood, 1 pound peach-wood ; lift, and add 1 ounce alum in solution; work in this for 20 minutes; wash and dry. If a lighter and redder shade be required, use less logwood and more peachwood. For a darker shade use more of each.

230. Rich Green Drab

230.    Rich Green Drab. "Work the goods 30 minutes in a bath with 1 ounce bichromate of potassa, 1/2 ounce alum, 1/2 ounce tartar; lift out and wash in cold water; then work for half an hour in another bath with 4 ounces logwood, 2 ounces fustic, 1 ounce barwood (or 1/2 ounce peachwood); wash and dry. The shades of this can be varied by using different proportions of the stuffs.

231. Rich Drab

231.    Rich Drab. Work for 30 minutes in 1/2 ounce bichromate of potassa; lift, and add 1 ounce of logwood; work in this for 30 minutes; lift out, wash and dry. Different proportions will produce different shades of color.

232. Chrome Blue

232.     Chrome Blue. 100 pounds of wool are boiled for one hour in a solution of 3 pounds bichromate of potash, 6 pounds alum, 1 pound half-refined tartar; then it is taken out, cooled, and rinsed. Boil 6 pounds good logwood in a bag for half an hour in fresh water, add 3 pounds cudbear, well moistened and dissolved. Cool the dye to 180° Fahr. Enter the prepared wool, and handle it for 3/4 of an hour; bring it to a boil in this time. This color ought to be always left a shade lighter when finished, as all chrome colors darken in drying.

In the foregoing receipts, the quantity of water to be used is not material, but will be regulated according to the size of the vessel and the amount of goods to be dyed, but there should always be enough water to cover the goods without the necessity of pressing them down.

Rules for making decoctions, etc., will be found in No. 94.

233. Preparing and Dyeing Silk

233.     Preparing and Dyeing Silk. New silk is banded in the same manner as cotton (see No. 122 (To Prepare Cotton Tarn for Dyeing)), in quantities convenient for making up into skeins when finished. After banding, it is tied up carefully in fine canvas bags and boiled three or four hours in strong soap-water to remove all the gum. Yellow silk must be first worked on sticks for an hour in a solution of soft soap at a temperature of about 200° Fahr., and then boiled in bags. It is then washed from the soap and put on sticks for dyeing.

Silk goods to be re-dyed must be steeped in a strong soap solution at nearly boiling point for a few hours, to remove all stains and grease; they are then washed, and if the color on them is light and equal, and they are to be dyed dark, then no further preparation is required ; but if the color is unequal, they must be soaked for 15 minutes in a sour (see No. 105 (To make a Sour)), and then washed out.

The quantities given in the following receipts are for five pounds of silk. If the goods are tightly spun, such as ribbons, dress silk, etc., the quantities must be slightly increased.

There must be sufficient water used to cover the goods laying loosely. "When goods are washed from the dye, it is always to be in cold water, unless otherwise stated.