PARASITOLOGY. 99 



sufficient to produce diarrhoea, a rough coat and an 

 unthrifty condition. Worms may be passed in the 

 feces. 



Treatment. — An aloetic ball made of one ounce 

 Barbadoes aloes, one dram powdered nux vomica, 

 with a sufficient quantity of linseed meal and glycer- 

 ine to make a bolus, followed by two drams tartar 

 emetic twice a day ; or, two-dram doses of iron sul- 

 phate three times a day for three or four days, con- 

 joined with the aloetic ball; or, oil of turpentine 

 two to three ounces, and two to three pints of raw 

 linseed oil. 



AsCARis ViTULi (Vitulus— a calf.) 



Synonym. — Ascaris Bovis; Ascaris Vitulonim. 



Distribution. — Common in Southern Europe; rare 

 in America. 



Description. — In this species the head is small and 

 distinct; the lips are enlarged at the base and stand 

 out prominently : the posterior extremity terminates 

 in a conical point which is reddish white in color ; 

 the male is six to eight inches long ; the female is 

 eight to ten inches long and oviparous. They have 



Fig. 35.— Ascaris Ovis. 

 a, Cephalic Extremity. 

 b Caudal Extremity. 



