BLUE WASH FOR WALLS.—Get a pound of blue vitriol from a drug or paint store, and have it powdered very finely in a mortar. Provide also two quarts of lime. Take six cents’ worth of glue, and boil it in a quart of soft water till thoroughly dissolved. Put the powdered vitriol into a wooden bucket, and when the glue-water is cold, pour it on the vitriol, and mix and stir it well. When the vitriol is dissolved in the glue-water, stir in by degrees the two quarts of lime. Then try the tint of the mixture by dipping a piece of white paper into it; and when it dries, you can judge if it is the colour you want. It should be a clear light beautiful blue. If you think it too dark, add some more lime. If too pale, stir in a little more of the powdered vitriol. It is well to provide an extra quantity of each of the articles, in case a little more of one or the other should be required on trial of the colour.
TO CLEAN WHITEWASH BRUSHES.—Wash off, with cold water, the lime from the bristles of the brush; and scrub well with a hard scrubbing-brush the part where the bristles are fixed into the wood. This should be done at once, as soon as the whitewashing for that day is finished. It is far better than to let them soak all night.
AN EASY WAY TO MAKE INK.—Take two ounces of the best and most perfect nut-galls, and bruise them to pieces with a hammer. Put them into a large mug, with half an ounce of copperas, and a quarter of an ounce of powdered gum-arabic. Pour on a pint of boiling water. Cover the vessel, and let it stand in a warm place for a week; frequently stirring the contents with a stick. Afterwards leave it one day undisturbed; and then pour off the liquid through a funnel into a bottle; in the bottom of which you have put half a dozen cloves or a spoonful of brandy, either of which will prevent the ink from moulding. Keep the bottle closely corked.
TO USE DURABLE INK.—It is an error (rectified by experience) to wash as soon as possible articles that have been marked with durable ink. On the contrary, they should be kept without washing for at least a week. If washed too soon, the soap and water will disturb the ink before it is thoroughly dried in, causing the letters to spread and look rough. Also, it will not be so good a black. Every time, before using it, set the little bottle with the marking liquid in the sun, or before a bright fire; and then stir it up from the bottom. This will increase its blackness. After putting the wash or gum-liquid on the place to be marked, dry it by the fire or in the hot sun, and then iron it smoothly. Do not write the name till next day, and then, as above mentioned, set the marking ink in the sun, and stir it up from the bottom. When the name is written, dry it as soon as possible, and then iron it again.
Durable ink may be extracted by wetting the writing with hot water, and then rubbing on a little sal-ammonia.