TP;XAS FEVER AND OTHER DISEASES IN MISSOURI. 
395 
against this disease, and may carry its germs accidentally in his 
clothes, or perhaps purposely in his pocket, and give it to others 
without getting it himself. 
3. Horses, native cattle, etc., may sometimes, in favorable cir¬ 
cumstances, carry the germs of the disease from farm to farm, 
highway to pastures, cars to pens, etc., by the agency of manure 
or other droppings of Southern infectious cattle. There is some 
doubt about the capability of diseased native cattle to spread dan¬ 
gerous germs emanating from their own malady. I am not pre¬ 
pared to say that this never occurs , although it may only in ex¬ 
tremely rare and peculiar circumstances. 
4. Good frosts kill the virus that may be stricken thereby, 
but in certain localities frosts may never be strong enough to kill 
it for some time after the first one. The months of April and 
November are, as a rule, not sufficiently cold during their whole 
period to effect disinfection ; and indeed I have on record cattle 
that were brought into Missouri in the latter part of February or 
first days of March, that disseminated germs causing the develop¬ 
ment of Texas fever later in the warmer months. 
5. Consequently infected pens, barns, and especially pastures, 
may be considered dangerous between the last good frosts in 
spring and first heavy ones in fall —not the very first one. 
6. Washing, scrubbing, disinfection with carbolic acid lo¬ 
tions, chloride of lime, and other mild antiseptics, are not always 
sufficient to kill all virus and prevent danger. 
7. Public stock pens, yards, cars, unfenced railways, are com¬ 
mon distributors of the germs of this affection as well as of some 
others. 
8. The germs of the disease, it appears, may cause the malady 
several months after their spread in our fields or other places in 
our climate. 
9. Acclimated Texas cattle, when they have passed a certain 
time, including a winter, in this country, are subject to death by 
the effect of Texas fever the same as are natives. There may be 
some exceptions to this, and perhaps certain conditions may yet 
prove variability, but I have observed this occurrence. 
10. The germs of Texas fever stay a certain period in the 
