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The fine impalpable soot obtained from the smoke of carbonaceous substances which have been only partly burnt, as in the flame of a smoking lamp. It consists of finely divided carbon, with sometimes a very small proportion of various impurities. It is used as an ingredient of printers' ink, and various black pigments a…

rganic compounds. Atomic weight 11.97. Symbol C. it is combustible, and forms the base of lampblack and charcoal, and enters largely into mineral coals. In its pure crystallized state it constitutes the diamond, the hardest of known substances, occuring in monometric crystals like the octahedron, etc. Another modificat…

reen fire (Pyrotech.), compositions of various combustible substances, as sulphur, niter, lampblack, etc., the flames of which are colored by various metallic salts, as those of antimony, strontium, barium, etc. -- Fire alarm (a) A signal given on the breaking out of a fire. (b) An apparatus for giving such an alarm.…

A composition of wax and lampblack, used by shoemakers for polishing, and by antiquaries in copying inscriptions.

chiefly from China, used for water colors. It is in rolls, or in square, and consists of lampblack or ivory black and animal glue. Called also China ink. The true India ink is sepia. See Sepia. -- India matting, floor matting made in China, India, etc., from grass and reeds; -- also called Canton, or China, matting.…

office. -- Printing ink, ink used in printing books, newspapers, etc. It is composed of lampblack or ivory black mingled with linseed or nut oil, made thick by boiling and burning. Other ingredients are employed for the finer qualities. Ure. -- Printing office, a place where books, pamphlets, or newspapers, etc., ar…