MICROSCOPICAL EXAMINATION 



519 



FIG. 301. Powdered Pimenta. (X 183.) A, Stone cells. B, Starch. C. Spiral water tube. 

 D, Epidermis. E, Trichomes. F, Aggregate crystals of Calcium oxalate. Or, parenchyma. 

 H, Parenchyma cells containing red color. See N.F., p. 329. 



FIG. 302. Nux Vomica. (X 183.) A, Fragments of trichomes. B, Thick- walled cells of the 

 endosperm, containing granular proteid. C, Fragments of trichomes showing the pointed tips. D^ 

 Fragments of trichomes showing the rounded bases. 



