104 VETERINARY PARASITOLOGY 
in the liver it is probable that the flukes live principally 
on blood. 
Ascites and emaciation may be visible on _post- 
mortem examination, and there may be submaxillary 
cedema or oedema of the dewlap. 
Treaiment.—There is no treatment of much use, as no 
anthelmintic has been discovered that will destroy 
parasites within the bile-ducts. 
The best course is to fatten sheep that are kept on 
infected land as quickly as possible. Volatile oils have 
been recommended. 
The following is a favourite prescription : 
BR Ferrisulph. .. 8 is oe Bie 
Sodii chlorid. .. a a .. Bij. 
Bacc. junip. .. ee i on 3X: 
Pulv. gentian .. au oD ee) LDS 
Oatmeal ‘ ad lb. xxv. 
Half a pound of this mixture ‘should be fed to each sheep 
once daily. 
Prophylaxis.—This is of the greatest importance on 
those lands in which the disease is prevalent. 
The most effectual means of prevention consists in 
draining all low, marshy fields, and afterwards dressing 
with sulphate of iron, salt, or lime. From about 2 to 
3 hundredweight per acre is necessary. From May 
to September is the best time of the year in which to 
dress the land. 
Rock-salt should be provided for the sheep to lick. 
In many parts of the country aromatic shrubs are added 
to the food during autumn and winter. The commonest 
are broom, willow, birch, and juniper. 
Raised drinking-troughs are sometimes of assistance. 
Care must be taken not to infect land not already 
fluky. Dogs, hares, rabbits, and other animals, may 
carry infection. In the dog, eggs may pass uninjured 
from a piece of ingested liver out on to fresh pastures, 
