POWDERED DRUGS AND FOODS. 



755 



2. Sclerenchymatous Fibers Wanting. 



* Containing Tannin. 



t With Oil-Secretion Reservoirs. 



Fig. 302. Various forms of stone cells: A, epidermis of hyoscyamus seeds; B, 

 pericarp of pimenta, containing brownish tannin masses; C, seed-coat of coffee; D, seed-coat 

 of almond; E, transverse section of seed-coat of white mustard showing beaker cells ; F, 

 surface view of beaker cells of seed-coat of white mustard; G, transverse section through 

 stone cells of endocarp of olive,. the lumen containing air; H, a stone cell from the periderm 

 of calumba, containing numerous monoclinic prisms of calcium oxalate; I, various forms 

 of stone cells isolated from pericarp of star anise. 



112. CLOVE FRUIT.— (See No. 173.) 



113. PIMENTA.— Dark brown (Fig. 302, B) ; rosette 

 aggregates of calcium oxalate, occasionally in monoclinic prisms. 



