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SYMPTOMS AND HISTORY" OF} DISEASE. 255 
hemorrhages on the surface. The hemorrhages usually 
have very sharply defined borders and ate easily recognized 
as hemorrhages. The serous membranes frequently show 
small hazemorrhagic areas, and the heart, especially the aur- 
icles, are often intensely hemorrhagic. 
We may summarize the symptoms as follows: As arule 
the disease appears suddenly; the case develops very rapidly 
and terminates fatally. Theantemortem symptoms are very 
unsatisfactory from a diagnostic standpoint. The post- 
mortem symptoms are definite and as a rule easily recogniz- 
ed and consist of more or less extensive hemorrhages which 
are sharply defined when they appear upon the surfaces of 
the vicera and serous membranes. 
History of the Disease in Minnesota.—It is now about 
two years since this disease was recognized in Minnesota by 
Dr. Wilson, of our State Board of Health Bacteriological 
Laboratory. During these two years there have been re- 
ported to the State Board of Health, 80 outbreaks among 
Minnesota cattle; these outbreaks involved 52 different 
farms, appeared in 18 different counties, and resulted ina 
loss of 551 cattle. 
It is safe to assume that a considerable number of other 
outbreaks appeared but were not reported. 
Four outbreaks have come under the writer’s personal 
observation and in three of these the opportunity was un- 
usually good for careful study of the cases from a clinical 
standpoint. 
