PLEURO-PNEUMONIA. 
547 
barkation to other ports, ever come within the range of even 
possible sources of infection. 
In reference to Ireland generally, 1 have met with only 
one case of pleuro-pneumonia in recently imported Irish cows 
during the last epizootic of the disease in this city. 
Now, in reference to Edinburgh,- we have been frequently 
told that we are a disseminating center; I do not deny that 
this may be so, but we are to a far greater degree a receiving 
center. We receive animals from all the surrounding coun¬ 
ties, from the northern counties of England and from Ireland, 
and these are dispersed throughout numerous grazing districts 
and dairying centers. We adopt every means in our power 
to prevent the introduction of disease, and for detecting its 
presence when it is introduced ; but an unscrupulous dealer 
comes amongst us and swamps our market with an infected 
stock from one of those undiscovered centers to which I have 
already alluded, taking care at the same time not to risk the 
sending amongst us of any animal palpably diseased, and the 
result is we become the victims of the cupidity of one man, 
or of the supineness of another local authority, or, what is of 
more importance, the supineness of the governing body of 
the country. 
Dairy Cows Spreading Disease. 
Unfortunately, too, the animals which most usually intro¬ 
duce the affection are cows, the only class of cattle that find 
a home within our bounds ; and one infected animal may be 
the means of carrying, indirectly, death and destruction into 
the midst of our dairies. And what remedy have we for 
this, or to whom are we to look for protection against it? 
1 have said that all that can possibly be done to guard 
against the introduction of disease is done, but if you con¬ 
sider for a moment the difficulties with which we have to 
contend in carrying out protective measures, you will see 
that there is little wonder we do sometimes become the me¬ 
dium through which disease is spread abroad in the surround¬ 
ing districts. 
Cows in an advanced stage of pregnancy, or that have just 
