ANTHELMINTICS. 185 



(Two grains may be given for each pound of the ani- 

 mal's weight. — Mayhew.) 



Chenopodium, American wormseed, the fruit of 

 Chenopodium ambrosiodes. 



Oleum Chenopodii, oil of wormseed. A volatile 

 oil, obtained from the American wormseed; destruc- 

 tive to roundworms. Dose: D., niv.-xv., thrice 

 daily, followed by a cathartic. 



Aspidium, filix mas, male fern. The rhizome of 

 Dryopteris filix mas and Dryopteris marginalis. 

 Contains filicic acid, a green, fatty oil, a volatile oil, 

 etc. 



Oleoresina Aspidii, oleoresin of male fern, extract 

 of male fern. Dose : H. and C, fl. 3 ij.-viij. ; D. and 

 C, TTLx.-fl. 3 i. ; Sheep and Pigs, fl. 3 i.-ij. The most 

 efficient remedy for tapeworm in aU of the domesti- 

 cated animals; should be given with a purgative. 

 Large doses are gastro-intestinal irritants. 



Oleum TerebinthincB, oil of turpentine. See under 

 Turpentine. 



The anthelmintics used against the ascarides 

 (roundworms) are : For horses and cattle^-aloes, oil of 

 turpentine, bitters, creolin, calx sulphurata, ferric 

 chloride in solution, copper sulphate, arsenic, sulphur, 

 salt in manger ; for dogs and cats — santonin, worm- 

 seed, oil of male fern, followed by a laxative. 



Against the oxyures (threadworms) — enemata of 

 alum, aqua calcis, carbolic acid, vinegar, turpentine, 

 sodium chloride, sulphur, and soft soap. 



Against strongyli : In the digestive tract — oil of 

 turpentine, decoction of aloes, and cathartics; in the 



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