256 POWDERED VEGETABLE DRUGS 



36. (Fig. 55) GAMBOGE. Gamboge. U. S. 



The gum resin obtained from Gardnia Hanburii H., Guttiferae. 



Brittle, easily powdered. 



Bright yellow. 



Nearly odorless. 



Slightly acrid. 



The microscope reveals little that is characteristic. Fragments of 

 vegetable tissue are sparingly present. There is no starch present. 

 The emulsified particles resemble bacteria and show active Brownian 

 movement. 



Ash should not exceed 1.5 per cent. 



Not generally adulterated. 



