268 SPECIFICS FOR THE ALIMENTARY TRACT 



This is used as an astringent in the diarrheas of the young. It 

 is less active than kino, krameria, or gambir, but more pleasant 

 on account of its sweetish taste. The coloring matter is eliminated 

 by the urine which it stains red. This coloring matter is not used 

 in medicine. 



* RHUS GLABRA 



Synonym. Sumac 



This is oiEcial as the fruit of Rhus Glabra, a shrub growing in 

 the waste places of North America. It contains from 6 to 27 per 

 cent, of tannic acid and several mallates. 



Fluidextractum Bhois Glahrce. D. TTL xxx — Ix; 2. — i. 



Uses. This drug is never used internally but the fluid extract 

 diluted with 6 to 8 parts of water is an efficient mouth wash in 

 stomatitis and acute pharyngitis. It is frequently prescribed with 

 small amounts of potassium chlorate as in the following prescrip- 

 tion. 



Mouth wash., 



B Potassii Chlorati 3 j ; 4. 



Fluidextracti Rhois Glabra 3 j ; 30. 



Aquse q. s ad. 3 yiij ; 250. 



Use as wash in stomatitis or pharyngitis. 



* QUERCUS 



Synonym. White oak bark 



This is the bark of the ordinary white oak, Quercus alba, a tree 

 indigenous to North America, east of the Mississippi. It contains 

 5 to 10 per cent, of tannin and a bitter, quercin. 



Uses. Used entirely externally. Usually as a decoction in the 

 strength of § j to O.j of water, as an injection in leucorrhoea, 

 pharyngitis, etc. 



* HAMAMELIS 



Synonym. Witch-hazel 



This is official as the folia (leaves) and cortex (bark) of Hama- 

 melis Yirginiana, a widely distributed shrub of North America. 

 It contains tannin and a volatile oil. 



Preparations. 



From the leaves. 



* Fluidextractum Hamamelides Poliorum, 8 per cent, tannin. 

 H. % j— ij ; 30.— 60. D. 3 ss— ij ; 2.-8. 



From the bark. 

 * Unofficial. 



