Round Worms of the Abomasum. 255 



by the roots. A free use of salt is also important as proving 

 destructive to the young worms. A rich and abundant diet is 

 also important. A rotation of cultivated crops and the exclusion 

 of sheep and cattle from the fields will render land safe. 



Treatment. Chabert's empyreumatic oil, a coffee cup full daily; 

 oil of turpentine, i part in 16 parts of milk — dose, 2 to 4 ozs., to 

 be repeated if necessary in three or four days. Common salt, 3 

 lbs., powdered ginger and saltpeter, of each J^ lb., warm water 



3 gallons, when cold add 24 ozs. oil of turpentine — dose, 2 ozs. 

 for a lamb of four to six months ; picrate of potash, dose for lamb, 



4 grains, for a sheep, 20 grs. ; tartar emetic 5 to 10 grs. in water ; 

 kamala, }i to i dr. daily. Benzine, gasoline and thymol. Such 

 are the usual remedies, but in the author's experience, these and 

 the much advertised worm powders are usually ineffective. 

 What is wanted is an agent which will pass through the three 

 first stomachs without solution and absorption, yet which will act 

 as a vermicide when dissolved in small amount. This is found 

 in arsenious acid which may be given in combination with other 

 tonics. Jr Arsenious acid i dr., sulphate of iron 5 drs., powdered 

 nux vomica 2 drs., powdered areca nut 2 ozs.. common salt 4 

 ozs. , mix, divide into 30 powders and give one daily, f This has 

 given me abundant succe.ss. 



Strongylus FilicoUis. Body greatly narrowed in its anterior 

 part ; mouth small, circular, nude ; a membrane projects on each 

 side of the head ; cesophagus dilated posteriorly ; intestine 

 slightly sinuous. Male 4}^ to 5 lines in length, extremely fili- 

 form, tail with two large membraneous alse and two spicula. 

 Female 8 to 9 lines in length, very attenuated in front, tail 

 pointed, two ovaries, one in front of the other, vulva behind the 

 middle of the body. Ova elliptical. 



This parasite is maihly found in the duodenum of sheep and 

 goat, and sometimes in the abomasum in company with the 

 strongylus contortus. It has the same blood-sucking habits, and 

 if present in equal numbers must be quite as injurious. 



Strongylus Convolutus. S. Ostertagi. Body brownish 

 yellow, much attenuated at its extremities ; mouth nude ; ceso- 

 phagus ending posteriorly in a small bulbous enlargement. Male 

 3 to 4 lines in length, with bilobed caudal membrane. Female 

 4^ to 6 lines in length, vulva in the posterior tenth of the body 

 depres.sed and covered by a meriibraneous projection. 



