48 

 derm. These cells are sinuous, with strongly convoluted walls, 



Figure 43 

 Fig. 43. Capsicum. (1) Epidermal cells of epicarp and (2) cells of 

 spermoderm. 



resembling, as Moeller has it, tripe. These elements are shown 

 in Fig. 43. 



CASCARA SAGRADA. 



{Rhantnus Piirshiana.) 



This drug is sometimes found in condimentals and may best 

 be recognized by one familiar with it, by its distinctive odor and 

 bitter, acrid taste. The powder is light brown in color. Among 

 the elements will be found very long, thick, liquified bast fibres, 

 as well as roughly rectangular stone cells about oOjjl in diameter, 

 with thick walls ; and both monoclinic crystals and rosette aggre- 

 gates of calcium oxalate. Another layer of cells of interest is 

 the parenchyma layer, the cells of which contain a yellowish sub- 

 stance which is colored red with alkalis. 



CORIANDER. 



{Coriandrum sativum.) 



The coriander fruit is used both whole and ground, and acts 

 as a flavoring substance chiefly, although it may have some little 

 tonic effect on the digestive juices. It has a mild and pleasing 

 odor and flavor, somewhat resembling that of fennel but not so 

 pronounced. While most of the tissues resemble those of fennel, 

 celery and other fruits of this family, the layer of fibre cells, 

 which cross each other and form a layer from 50 — 175;u thick, 

 are characteristic. These fibres have thick sclerenchymatized, 

 porous walls and are easily recognized. Usually also will be found 

 portions of the oil ducts, which with the fibre layer are of aid in 

 the diagnosis. These oil ducts are from 300 — 400ju in diameter. 

 In bulk the powdered coriander is light brown in color. 



