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Fine Marking Ink

Marking linen is most conveniently effected by using a small stiff brush and a small copper plate with perforations corresponding to the letters required. This stencil plate is laid upon the linen, and the ink is rubbed into the cut-out spaces with the brush. The following ink is of service for marking linen with a stencil plate: 2 parts nitrate of silver, 4 parts distilled water, 2½ parts gum-arabic, 3 parts carbonate of soda crystals, 5 parts liquid ammonia. The best way to prepare the ink is to first dissolve the nitrate of silver in the liquid ammonia, and the gum-arabic and soda in the distilled water. The two solutions are then mixed together and slightly warmed, when the whole mixture becomes brown. A few drops of a solution of magenta makes the ink

2506. To Write on Greasy Paper or Parchment. Put to a bullock's gall 1 handful of salt, and + pint vinegar, stir it until it is mixed well; when the paper or parchment is greasy, put 1 drop of the gall into the ink, and the difficulty will be instantly obviated. 2507. To Remove Ink Blotches from Writing. When ink blotches have been formed over writing which it is desired to somewhat more distinct. When this method decipher, we are advised to brush off the is used, the linen requires no previous prespot carefully with a weak solution of oxalic paration. acid by means of a camel's-hair pencil. In 2511. Aniline Marking Ink. Dissolve this way layer after layer of the superincum- 84 grains bichloride of copper in 30 grains bent ink will be removed, and finally the distilled water, then add 10 grains common writing itself will, in most cases, come to salt, and 94 grains liquid ammonia. A soluview. This is especially possible where some tion of 30 grains hydrochlorate of aniline in considerable interval has elapsed between the 20 grains distilled water is then added to 20 two applications of ink. As soon as the let-grains of a solution of gum-arabic (containters are visible the brushing should be con- ing 2 parts water, 1 part gum-arabic), and tinued for a time with clean water, so as to arrest the tendency of the acid solution to make a further change in the ink. lastly 10 grains of glycerine. 4 parts of the aniline solution thus prepared are mixed with 1 part of the copper solution. The liquid which results has a green appearance, and 2508. Redwood's Indelible Marking Ink. Dissolve 1 ounce nitrate of silver and may be at once employed for marking linen, 14 ounces crystallized carbonate of soda in since it invariably becomes black after a few Then wash the honey thoroughly from the powdered metal and mix with gum water. (See also No. 25.) 2518. Liquid Gold, for Vellum, &c.

Take gold leaf and grind it with gum water; then add a small quantity of bichloride of mercury, and bottle for use. days. A steel pen may be employed as well as a quill. If it is desirable not to wait so long for the appearance of the black color, a hot iron may be passed over the writing when the ink is dry, or the linen may be held over the flame of a spirit lamp, or over a hot plate, or hot water, when the black tint will readily appear. It is a good plan to put the linen, when marked, into a tepid solution of soap, which has the effect of bringing out a fine bluish tint. The ink must be so limpid that