582 VEGETABLE DRUGS 



seed oil ; in acute disorders of the chest (10-15TIX °^ either 

 side) and abdomen (40TrL), similarly diluted. 



Absorption, purging and revulsant action may be 

 secured by the external application of croton oil. Croton 

 oil is more often employed in cattle (1-6 or 10, with cod liver 

 oil) for its counter-irritant effect when rubbed into the skin, 

 as in laryngitis, glandular enlargement, and rheumatic joints. 

 It is less likely to cause severe inflammation and blemishing 

 than in horses. For swine, croton oil is diluted with 2 

 volumes of linseed or cod liver oil. 



Uses Internal. — Croton oil is more suitable as a drastic 

 cathartic for cattle, than for horses. It is prescribed in 

 obstinate constipation (not of organic origin) when other 

 remedies fail. Also in unconscious conditions where its 

 small bulk will allow of its exhibition. Again, for its deriva- 

 tive and rapid effect in cerebral congestion, parturient 

 apoplexy, etc. Croton oil may be given to dogs and pigs in 

 similar conditions. The oil is too irritant for horses to 

 justify its use save in exceptional cases. 



SoAMMONiUM. Scammony. (U. S. & B. P.) 



Synonym. — Scammonee, Fr.; scammonium, G. 



A resinous exudation from the living root of Convolvu- 

 lus Scammonia Linne (nat. ord. Convolvulacese). 



Hahitat. — Syria. 



Description. — In irregular, angular pieces or circular 

 cakes, greenish-gray or blackish; internally porous, and 

 breaking with an angular fracture; of a resinous lustre; 

 odor peculiar, somewhat cheese-like; taste slightly acrid; 

 powder gray or greenish-gray. When triturated with water, 

 scammony yields a greenish emulsion ; ether dissolves at 

 least 75 per cent, of it. 



Constituents. — 1, a resin (80-95 per cent.); 2, gum ; 3, 

 starch. 



Dose.—D., 3 i.-ii. (4-8.); Cats, 3 ss.-i. (2.-4); Sw., 3 ii.-iv. 

 (8.-15.). 



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