572 
G. L. BUFFINGTON. 
Iii these two cases there was no emaciation; the only symp¬ 
toms being those of acute diarrhoea which soon terminated 
in recovery. 
Prevention. —Though we may not yet know the precise 
life-history and mode of introduction of these parasites, yet we 
are not altogether at the mercy of their invasion. The ova, 
it is pretty certainly determined, are derived from without, in 
all probabilities from the water supply or from forage when 
obtained an low, damp ground. It is evident, then, if a vigor¬ 
ous quarantine can be kept over these supplies, we can expect 
to keep animals reasonably free from invasion. But as this 
requires continual patient care, and on many farms difficult 
to control, it is generally neglected in practice, and the ne¬ 
cessity for it comes into notice only after losses have been 
endured. 
The parasite does not always come, however, as the result 
of faulty hygienic surroundings, as animals may be infested 
when running in good pasture and drinking from a stream of 
running water. And yet, after one attack under such circum¬ 
stances, it would be advisable to remove the animals to a 
higher or better-drained pasture, and furnish the water sup- 
plv from a deep well which receives no surface drainage. 
Iron sulph. mixed with the salt, and given once or twice a 
week, would prove beneficial in warding off the parasite. . If 
an attack is imminent, the iron should be given more fre¬ 
quently, mixed Avith ground feed. 
Treatment. —The indications in the treatment of this form 
of parasitism is to cause expulsion of the parasite and maintain 
the strength of the patient by tonics or stimulants, if the ani¬ 
mal is greatly debilitated. 
Various and numerous are the therapeutical agents used 
as vermifuges. Arsenious acid, tartar emetic, santonine, male 
shield fern, empyreumatic oil, have all been used with more 
or less success. Turpentine is highly lauded by some author¬ 
ities as an efficient agent in expelling these worms. The 
treatment proving most satisfactory to me has been iron 
sulph., given for two or three days in ground feed, and this 
followed by a dose of aloes sufficient to cause mild purgation, 
