82 VETERINARY PARASITOLOGY 
Treatment. — Arsenic, 3 grains, with areca - nut, 
I5 grains, should be given once daily for a week, and 
followed by a purgative. Potassium picrate, 10 to 
20 grains, once daily, or naphthalin, 20 grains, may be 
used. Other agents used are kamala,1 drachm, twice 
daily, male-fern, and 
lysol. 
Lambs should be 
kept off infected pas- 
tures, and these should 
be drained and dressed 
with sulphate of iron, 
lime, or salt. 
Ascaris Ovis.— One 
or two cases have been 
recorded, but the para- 
site is rare. 
Sclerostomum Hypo- 
stomum.—This para- 
site is an inhabitant 
of the large intestine 
of the sheep and goat. 
It lives in small nodules in the mucous membrane. Its 
length is r inch (female) ; the male is smaller. The body 
is stiff and white, and the head is rounded, but is 
obliquely cut off on one side. The mouth is armed with 
teeth. 
Symptoms.—Anemia, gastro-enteritis, and dysentery. 
On the whole, the symptoms resemble almost precisely 
those produced by Sclerostomes in the horse. 
The mucous membrane of the intestine is chocolate- 
coloured, and shows nodules. Many cases prove fatal. 
Treatment. — Thymol, turpentine, and linseed-oil ; 
lysol, salol, etc., may be used, 
Fic. 21.—HEAD AND SEGMENTS OF 
Ta@nNIA FIMBRIATA. 
