66 Botanic Drugs 



the preceding section. Never give crude turpentine 

 internally. The preparations noted are preferable 

 in every way. 



ACACIA 



ACACIA, GUM ARABIC, Acacia Senegal and A. 

 Varek (Ninth Rev.). A gummy exudation, of de- 

 mulcent properties, and used as a suspending agent. 

 The U. S. P. mucilage of acacia is commonly used, 

 but it is precipitated by alcohol, and the lime water 

 in it precipitates alkaloids. Alkaloids would better 

 be added to the syrup of acacia. Mucilage of 

 tragacanth is not precipitated by alcohol. Extract 

 of malt is displacing these gums to carry acid and 

 bitter drugs. 



ACACIA CORTEX, the bark of A. Arabica, is official 

 in England. Its decoction is used in doses of one- 

 half to two fluid ounces as an astringent. 



ACACIA CATECHU, formerly official, was known 

 as catechu. Its preparations were not stable, and 

 GAMBIR, Ourouparia gambir, took its place. 



ACIDS Vegetable 



AGARIC ACID is derived from a fungus, Poly- 

 porus officinalis. It paralyzes the peripheral nerves 

 of the sweat glands. It is used to arrest colliquative 

 sweats. Its action is rather evanescent. Maximal 

 single dose is ]4. grain. Usual dose, l /i to % grain. 

 Do not use it hypodermically. It is listed in N. N. R. 



BENZOIC ACID, ACIDUM BENZOICUM, both the 

 natural and synthetic acids official. Its chief sources 

 of supply are from benzoin and toluol. A form 



