2492. Silver Ink

2492.     Silver Ink. Silver ink is prepared in the same way, from silver leaf, as the gold in last receipt.

2493. Gold Labels on Glass Bottles

2493.     Gold Labels on Glass Bottles. The finely divided gold, prepared as in No. 2491, is distributed in a solution of gum damar in naphtha, and the writing is to be done with this fluid by means of a brush. If the solution should become too thick in course of time, a little naphtha is added and well shaken, when the gold paint will be ready for use again. The gum damar in drying will cover the written lines with a kind of varnish that will protect the gold from the action of acids or alkalies.

2494. Purple Ink, or King of Purples

2494.  Purple Ink, or King of Purples. Infuse 12 pounds campeachy logwood in 12 gallons water; provide a funnel at the bottom of which a sponge has been placed; pour the infusion through a strainer made of coarse flannel into the funnel, and thence on to 1 pound hydrate or acetate of copper (verdigris); then add immediately 14 pounds alum; and for each 17 gallons of the liquid, add 4 pounds gum-arabic or Senegal; let these remain 3 or 4 days and a beautiful purple will be produced.

2495. Green Ink

2495.    Green Ink. Boil 2 parts acetate of copper and 1 part bitartrate of potassa in 8 parts water, until the solution is reduced to half the bulk; filter through a cloth, and, when cool, bottle.

2496. Green Ink

2496.    Green Ink. Dissolve 180 grains bichromate of potassa in 1 fluid ounce of water ; add, while warm, 1/2 ounce spirit of wine; then decompose the mixture with concentrated sulphuric acid, until it assumes a brown color; evaporate this liquor until its quantity is reduced to one-half; dilute it with 2 ounces distilled water; filter it, add 1/2 ounce alcohol, followed by a few drops strong sulphuric acid; it is now allowed to rest, and after a time it assumes a beautiful green color. After the addition of a small quantity of gum-arabic, it is ready for use.

2497. Violet, Magenta, and Solferino Ink

2497.   Violet, Magenta, and Solferino Ink. Inks of these, and such other bright aniline colors may be made as follows : Mix

1 drachm of the proper aniline color with l1/2 ounces alcohol (see No. 2578 (Aniline Cerise and Safranine)) in a glass or enameled iron vessel; let it stand for 3 hours. Then add 13 ounces distilled water, and subject the whole to a gentle heat until the alcohol has evaporated, that is, until no odor of alcohol is perceptible; then add 4 drachms gum-arabic dissolved in 3 ounces water. Mix and strain. As the aniline colors of commerce vary a great deal in quality, the amount of dilution must vary with the sample used, and the shade determined by trial.

2498. Heusler's Bed Ink

2498.    Heusler's Bed Ink. Take 2 ounces best Brazil wood, 1/2 ounce pulverized alum, 1/2 ounce crystals of bitartrate of potassa, and 16 ounces distilled water; boil down to one half, and strain. Then dissolve in it 1/2 ounce gum-arabic, and add 11/2 drachms cochineal dissolved in 11/2 ounces alcohol of specific gravity .839.