Guttapercha-Guttapercha.-The concrete juice of Isonandra gutta. A native of Borneo, Sumatra, and other Eastern islands.

Characters and Tests.-In tough flexible pieces, of a light brown or chocolate colour. Soluble or nearly soluble in chloroform, yielding a more or less turbid solution.

Composition.-Guttapercha contains 80 per cent. of a hydrocarbon gutta, salts, volatile oil, fat, colouring matter, and two bodies named alban and fluavil.

Preparation. Liquor Guttapercha.-1 in 8 of Chloroform, with 1 of Carbonate of Lead; by solution and decantation.