Gums

Amorphous carbohydrates, usually of vegetable origin, insoluble in alcohol. Treated with water they either di olve or swell up, forming a starchy mucilaginous substance. Gums. The dense fibrous pink ti ue which covers the bony (alveolar) margins of the two jaws, and incloses the neck of the teeth; protects and helps to nourish the teeth. Gum Tragacanth. Gum derived from Astragalus gum Leguminosæ , mifer , a low, spiny shrub of the natural order Legumi native of w. Asia. IMG:content-0443.png:[blocks in formation] between guides. It is open at one end only, built usually of boiler iron, and has a capacity when loaded even of ab. 4 tons.