INK

n. Ian*k. Mid. Eng.,enfce. Or.,tyicav<rrov. Lat., encaustum. Fr., encre. Ger., Dinte, Tinte. It., inchiostro. Sp., tint a. A coloring matter used to produce impre ions on paper or other material, [a, 24.] Black i. An i. of black color, usually prepared from a tannin-yielding body and a salt of iron. It is a ferroso-ferric gallate held in suspension in water, [a, 24.] China i. See Indian i. Diamond i. An i. for writing on gla with a common pen; a mixture of barium sulphate, ammonium fluoride, and sulphuric acid; kept in gla bottles which are coated on the outside with asphaltum varnish and on the inside with wax. [" Proc. of the Am. Pharm. A oc.," xxix (a, 39).] Indelible i. Incorrodible i., made by combining lamp-black with resinous substances. A very good sort is prepared by rubbing down Indian i. in ordinary black i. [B, 5, 77 (a, 24).] See also Marking i. India i., Indian i. A dried mixture of fine lamp-black and size or thin glue, [a, 24.] I'berry. See the major list. I.-plant. In New Zealand and South America, the Coriaria ruscifolia and the Coriaria thymifnlia. The juice of these plants, locally termed canchi, is at first of a somewhat reddish color, but becomes intensely black in a few hours. The juice may be used without preparation; it corrodes le , and resists the action of chemical reagents better than ordinary i. [" Proc. of the Am. Pharm. A oc.," xvi (a, 39); B, 186, 275 (a, 14).] I'root. The Statice carol in i an a. [Griffith (a, 35).] Invisible i. See Sympathetic i. Marking i. An i. used chiefly for marking linen. It is composed of a silver salt in solution in water or ammonia, thickened with a little gum. [a, 24; " Proc. of the Am. Pharm. A oc.," xvi (a, 39).] Portable i. An i. prepared by saturating several sheets of paper with aniline black, and pre ing them together into a compact, portable ma . For writing, a piece of this paper is torn off and steeped in a little water. ['' Proc. of the Am. Pharm. A oc.," xxii (a, 39).] Sympathetic i. An i. employed for forming characters which become visible only when heat or some chemical reagent is applied, [a, 24.] [s. 462]