STONE ROOT STORAX. 271 



catarrhal gastric disorders in general. This drug is of 

 undoubted power, and deserves a careful study. 



Preparation Fluid extract : Dose, $-1 drachm. 



Distinctive character Stem about i foot long. 

 Leaves alternate, short-stalked, 2-3 inches long and 

 one-third as broad, lanceolate, acute, serrate, smooth, 

 and thin. Flowers small greenish, in rows along the 

 upper sides of the branches of the terminal cyme, five- 

 parted, with 10 stamens. Taste, slightly astringent. 

 Odour, characteristic. 



STONB ROOT. Collinsonia Canadensls, Linn. 



N.O. Labiata. 



Syn. Rich Weed, Rich Leaf, Knob Root, Knob 

 Weed, Horsebalm, Horseweed. 



Part used Root. 



Action Stomachic, diuretic, tonic. Is regarded by 

 many as a certain remedy in cases of gravel, stone in 

 the bladder, piles, &c. As a general diuretic it is 

 undoubtedly of great value. It is largely used among 

 American veterinary surgeons as a diuretic. As a 

 gargle use i part of fluid extract to 3 of water. 



Preparations Fluid extract : Dose, 15-60 drops. 

 Collinsonin : Dose, 2-4 grains. 



Distinctive character Rhizome brown-grey, about 

 4 inches long, with knotty, short, irregular branches, 

 and numerous shallow stem scars, very hard, with a thin 

 bark, irregular woody wedges, and numerous brittle 

 rootlets. Taste, bitterish, disagreeable. Odour, none. 



STORAX. Liqutdambar orientalis, Mill. 



N.O. Hamamelidacea. 



Syn. Styrax, Prepared Storax, Liquid Storax, 

 Balsam Styracis. 



Part used Balsam. 



Action Expectorant, stimulant. Like most balsams 

 it acts very beneficially upon the mucous membranes, 



