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SCIENTIFIC AND APPLIED PHARMACOGNOSY 



colorless, very irregular in shape, and contain either air or a reddish- 

 brown amorphous substance; bast fibers from 0.300 to 1.50 mm. in 

 length and usually in groups of from 2 to 20 with very thick and 

 slightly lignified walls; numerous cellular, reddish-brown fragments 

 in which the oil cells are not readily distinguishable. 



sck 



FIG. 115. Radial-longitudinal section of China Cassia (Cinnamomum Cassia) 

 bark; pr, parenchyma of outer bark; bp, parenchyma of the inner bark, 

 some of the cells of which contain raphides; b, bast fibers; st, stone cells; 

 sch, mucilage cells; s, sieve; m, medullary rays. After Moeller. 



Powder of Cassia Cinnamon. (Fig. 116). Dark brown; resem- 

 bling that of Saigon Cinnamon, but usually with fewer cork cells 

 and a larger number of sclerenchymatous cells and fibers. 



Powder of Ceylon Cinnamon. Light- or yellowish-brown; 

 starch grains numerous, either single or compound, the individual 

 grains being spheroidal or polygonal, from 0.003 to 0.020 mm. in 

 diameter; bast fibers from 0.300 to 0.800 mm. in length, usually 



