VEGETABLE POWDERS 



349 



Fig. 101. GAMBIR. 



a, particles of the gum mounted in water, showing the fine somewhat 

 striate irregular needle-like crystalline structure; I, the diagnostic simple, brownish 

 rather thick-walled mostly single-celled trichomes. The thickening of the wall 

 may extend entirely across the lumen giving the resemblance of a two- to three- 

 celled trichome; c, larger crystalline fragments of the gambir. 



