THE NATURE OF THE AMERICAN SWINE PLAGUE. 
451 
localities in which no cases of swine plague had occurred during 
the previous twelve months, still they cannot be assured that the 
disease would not break out in such swine shortly after arrival 
upon or within the territory of the State on account of their 
having been transported in cars or other conveyances, in which 
swine plague-diseased hogs had been previously transported, 
without said conveyances having been subsequently cleansed and 
disinfected. 
(Numerous outbreaks of this kind due to imported hogs, as 
well as inter-State transport, have come to my knowledge since I 
have been investigating this disease.) 
This fact, that buyers or shippers of swine cannot assure them¬ 
selves that no sick swine have been conveyed in the cars or other 
conveyances, not only renders a quarantine absolutely necessary 
for imported hogs, but suggests the necessity of State authorities 
organizing some method by which cars and other public convey¬ 
ances used to convey live stock either into or within the bound¬ 
aries of a State should be properly cleansed and disinfected under 
the observation of a trustworthy inspector after their use for 
such purposes. 
Regulations to be observed when outbreaks of swine plague 
occur within the boundaries of a State. 
All places where swine plague exists should be indicated by 
sign boards during the prevalence of the outbreak and for six 
months after it has ceased. Hog-pens or runs should be so situated 
that they can be well drained and exposed to the action of the 
sun and air. 
(Thoroughly muddy runs are not as dangerous as those which 
practically dry out, if the disease appears in either. Filth alone 
is not the cause of swine plague, though under some circumstances 
it may help support it.) Hog-pens or runs should never be so 
situated that the drainage from them could gain access to the well 
from which animals are watered, or to running streams. Owners 
of hogs diseased with swine plague should be cautioned not to 
allow, and be held responsible for, any extension of the disease from 
their hogs to healthy swine belonging to other persons, when such 
owner or owners failed to comply with the regulations enacted for 
the control and prevention of the disease, such as; 
