main to renew the infestation. Treatments must be repeated as often 
as necessary. As fleas and lice are intermediate hosts, the removal of 
these worms should be accompanied by the eradication of the insect 
hosts or reinfestation usually follows in a short time. 
Flukes. According to Jeffreys, carbon tetrachlorid as given above 
for ascarids will remove the intestinal flukes from foxes, and it may 
prove equally effective in removing these flukes from dogs. 
TREATMENTS FOR CAT PARASITES. 
Ascarids. Fast overnight. Oil of chenopodium, 0.05 cc. per kilo, 
immediately preceded or followed by a half ounce to an ounce of 
castor oil. Chenopodium is twice as toxic for cats as for dogs and 
should be used in the diminished dose given here. The carbon tetra¬ 
chlorid treatment is safer. 
Carbon tetrachlorid, 0.3 cc. per kilo, to animals fasted overnight, 
as for dogs. Carbon tetrachlorid is twice as toxic for cats as for 
dogs, but the safety factor for the therapeutic dose is about 27, whereas 
that for chenopodium as given above is about five. As a rule, carbon 
tetrachlorid can be given with safety to kittens three weeks old. 
Hookworms. Carbon tetrachlorid as above. 
Tapeworms. The same drugs that are used to remove tape¬ 
worms from dogs may be used to remove tapeworms from cats, the 
dose being diminished in accordance with the size of the animal. 
TREATMENTS FOR FOX PARASITES 
Ascarids. Carbon tetrachlorid in capsules at the rate of 0.3 cc. 
per kilo, as for hookworms in dogs. It is reported that the use of 
a small balling gun and a speculum is the most satisfactory mode of 
administering these capsules to foxes. Allen recommends chenopodium, 
15 to 20 minims, in capsules, for adults; give adequate dose of castor oil 
with this. The efficacy of both drugs against ascarids in foxes is re¬ 
ported as approximately 100 per cent. 
90 
