PLEURO-RNEUMONIA ERYSIPELATODES. 
321 
stamping out this disease, ever to remember that the time will 
never come when the same can be done without the sacrifice not 
only of much human energy, but of money also. They should 
also remember that great parsimony in one direction, is generally 
followed by equally great extravagance in another. It is self- 
evident, that the period fixed for the introduction of such radical 
measures, should be carefully adapted to the agricultural and 
economical interests of the districts in question and the individual 
owners. This would seem possible, by restricting the earliest 
possible period at which a once diseased animal could be slaugh¬ 
tered, to one and one-lialf years from the time it had apparently 
become free from the disease. 
So long as we are unable to bring to bear means which are 
capable of thoroughly stamping out this disease, must we do our 
utmost in other ways to shorten its course and render the same 
milder. Inoculation has been for a long time looked upon as 
such a means, without authorities, however, coming to any united 
opinion over the exact value of the same. It has been, indeed, 
asserted that this pest can be stamped out and its course shortened 
by the exact restriction of all intercourse between healthy and dis¬ 
eased animals, at a much less cost than by inoculation. Is such 
a method capable of execution ? How can we recognize the dis¬ 
ease in it* latent stadium, during which the complicated organ- 
ismus is capable of causing infection, although in a less intense 
degree than in the fever stadium. All individuals by which this 
disease is present, even in the afebril stadium , are capable of in¬ 
fecting their non-diseased companions, for a long period before 
they themselves are looked upon as diseased ; therefore, the early 
establishment of immunity against natural infection is much 
more safe and effective than the isolation of the diseased from 
the healthy animals. Such an isolation is, in many cases, impos¬ 
sible on account of insufficiency of room. Aside from this, we 
have, thankfully—in Germany—so far progressed in the treat¬ 
ment of this disease, that all manifestly diseased animals are at 
once killed, and I hope that in the new laws with reference to the 
animal pests, which are in process of being drafted for the entire 
Gernian empire, a way wfill be prepared for the immediate 
