2. Boil French berries, 1⁄2 lb., and alum, 1 oz., in rain water, 1 quart, for half an hour, or longer, then strain and dissolve in the hot liquor gum Arabic, 1 oz.
Ink, Zinc Labels, to write on. Syn. Horticultural ink. 1. Dissolve 100 gr. of tetrachloride of platinum in a pint of water. A little mucilage and lamp black may be added.
2. Sal ammoniac 1 dr.; verdigris, 1 dr.; lampblack, 1⁄2 dr.; water, 10 dr.; mix.
INK POW′DERS. Prep. 1. Aleppo galls, 4 oz.; sulphate of iron, 11⁄2 oz.; gum Arabic, 1 oz.; lump sugar, 3⁄4 oz.; (all quite dry and in powder); mix, and divide into 3 packets. A pint of boiling water poured over one of them produces, in a few hours, a pint of excellent ink.
2. Aleppo galls, 3 lbs.; copperas, 1 lb.; gum Arabic, 1⁄2 lb.; white sugar, 1⁄4 lb.; all in powder; mix, and divide into two-ounce packets, to be used as the last. Ink powders are very useful in travelling.
INK STAINS, to remove. See Spots.
INOCULA′TION. Syn. Inoculatio, L. In medicine and surgery, the application of poisonous
or infectious matter to any part of the body for the purpose of propagating a milder form of disease, and thus preventing or lessening the virulence of future attacks. In this country the term is generally restricted to the artificial propagation of smallpox. See Vaccination.
INOSIN′IC ACID. An acid said by Liebig to exist in the juice of the flesh of animals, after it has deposited its kreatine.
IN′OSITE. A species of unfermentable sugar, discovered by Scherer in the juice of flesh. It forms beautiful crystals.