An ingenious and simple mode of annealing glass has been some time in use by chemists. It consists in immersing the vessel in cold water, gradually heated to the boiling point, and suffered to remain till cold, when it will be fit for use. Should the glass be exposed to a higher temperature than that of boiling water, it will be necessary to immerse it in oil.
425. To take Marking-Ink out of Linen
Use a solution of cyanide of potassium applied with a camel-hair brush. After the marking ink disappears, the linen should be well washed in cold water.
426. To take Stains of Wine out of Linen
Hold the articles in milk while it is boiling on the fire, and the stains will soon disappear.
427. Fruit Stains in Linen
To remove them, rub the part on each side with yellow soap, then tie up a piece of pearlash in the cloth, &c., and soak well in hot water, or boil; afterwards expose the stained part to the sun and air until the stain is removed.