194 LAURACE^E 



the Ceylon shows the largest stone cells. In' Cassia the stone cells 

 are less numerous and smaller. In the Saigon the oblong stone 

 cells are about the same size as those of Cassia, but fewer in number. 

 Powder. Elements of: See Part iv, Chap. I, B. 



OFFICIAL PREPARATIONS. 



Tinctura Cardamom! Composita (2.5 per 



cent.), Dose: i to 3 fl. dr. (4 to 12 mils). 



Tinctura Gambir Composita (2.5 per cent.), % to 3 fl. dr. (2 to 12 mils). 



Tinctura Lavandulae Composita (2 per 



cent.), % to 2 fl. dr. (2 to 8 mils). 



Tinctura Rhei Aromatica (4 per cent.), 



employed in Syrupus Rhei Aromaticus. 



Tinctura Cinnamomi (20 per cent.), % to 2 fl. dr. (2 to 8 "mils). 



Employed also in Vinum 

 Opii and Infusum Digitalis. 

 Pulvis Aromaticus (35 per cent.), 15 gr. (i Gm.). 



FIG. 97. Saigon cinnamon Cross-section of bark. A. Corky layer. B. Parenchyma cells. 

 C. Stone cells. D. Bast fibers. E. Oil-resin cells. F. Medullary rays, very inconspicuous. 



SASSAFRAS. SASSAFRAS 



Sas'safras variif o'lium O. Kuntze. The various portions used in medicine are the 

 bark of the root, the volatile oil, and the pith, all official, and the^wood, 

 unofficial. 



BOTANICAL CHARACTERISTICS. Tree with spicy, aromatic bark, 15 to 125 feet 

 high, with yellowish-green twigs. Leaves ovate, entire, or some of them 

 3-lobed. Flowers dioecious, greenish-yellow, in racemes. 



HABITAT. North America, from Kansas eastward. 



170. SASSAFRAS. SASSAFRAS BARK 



The dried bark of the root of Sassafras variifolium 0. Kuntze, collected in early 

 spring or autumn and deprived of the outer corky layer withjnot more than 2 

 per cent, of adhering wood present. 



