GUM RES′INS

Syn. Gummi resinæ , L. Vegetable products in which the properties of gum and resin are combined. They are partly soluble in water, and partly in alcohol. Many of them form a species of emulsion when triturated with the former fluid. The principal gum resins are AMMONIACUM , ASSAFŒTIDA , BDELLIUM , GALBANUM , GAMBOGE , MYRRH , OLIBANUM , OPOPONAX , SAGAPENUM , and SCAMMONY .