anthelmintics. It has been found by Hodgkins that numbers of these 
worms may be washed out of the stomach by gastric lavage with the 
stomach tube. Possibly anthelmintics could be effectively administered 
in this way. In some cases repeated treatments by mouth or by 
lavage might remove all or practically all of the worms present. 
To clean out the bots and nematode parasites as completely as 
possible from the digestive tract of the horse, give the carbon bi- 
sulphid treatment for bots and ascarids and two weeks later give 
the chenopodium treatment for palisade worms, cylicostomes and 
pinworms. Both drugs will probably kill stomach worms not pro¬ 
tected by mucus or in the mucosa. 
Tapeworms: The presence of tapeworms in the horse is usually 
ascertained postmortem and practically nothing is known in regard 
to treatment. As the worms occur in the stomach, small intestine 
and large intestine, it would require critical tests, which have not yet 
been made, to determine the efficacy of drugs against these worms 
with any degree of accuracy. The indicated drugs for test are those 
in common use against tapeworms, such as oleoresin of male fern, 
kamala, etc. 
TREATMENTS FOR CATTLE PARASITES 
Ascarids: Treatment uncertain as we lack the findings of critical 
tests of anthelmintics for removing these worms. Hornby finds tur¬ 
pentine in doses of two to four fluid drams in a mixture of two fluid 
ounces of linseed and castor oils effective when this dose is given on 
each of two successive morning to calves and a third dose is given a 
week later. A single dose of two drams is ineffective and one ounce 
is too toxic. 
Stomach worms (Haemonchus contortus): The copper sulphate 
solution and the tobacco and copper sulphate solution noted below in 
connection with stomach worms of sheep are probably of some value 
in controlling stomach worms in cattle when given in appropriate doses. 
100 to 300 cc., but in the absence of critical tests we cannot make very 
positive statements in regard to this. Carbon tetrachlorid in doses 
of 100 cc. to calves weighing 80 and 114 kilos (175 and 250 pounds) re¬ 
moved all the stomach worms, but had a toxic effect on the animals, 
the smaller one being dead the fourth day. Adult cattle have suc¬ 
cumbed to doses of 22 cc., but good clinical results are reported from 
doses of 32 cc. (one fluid ounce) of carbon tetrachlorid in one pint of 
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