4370. Tests for Gelatine

4370.     Tests for Gelatine. Gelatine dissolved in water is recognized by forming a jelly on cooling; it is precipitated by alcohol; corrosive sublimate throws down a whitish, flocculent precipitate; a solution of tannin, or an infusion of galls, gives a curdy, yellowish-white precipitate, which, on being stirred, coheres into an elastic mass, insoluble in water, and, when dry, assumes the appearance of over-tanned leather.

4371. Asbestos

4371.     Asbestos. A natural substance, resembling flax, capable of withstanding unchanged a considerable degree of heat; it may, therefore, be cleansed or purified by fire. It is also called Amianthus.