11 
wav the bodies above described as beino- found in the fresh and stained 
})lood of persons sulfering from spotted (tick) fever. 
In the cases of spotted (tick) fever which 1 had the opportunity of 
examinino- I had no great difficultv in lindino- both in fresh and stained 
preparations the bodies above described. Their constancy in the blood 
of persons sulfering with spotted fev^r. their persistence for some time 
in the blood of these persons after recovery, their absence from the 
blood of persons suffering from other diseases and of healthy persons 
makes it very probable that they are the cause of the disease, and that 
one more has been added to the rapidly growing list of diseases of man 
due to animal parasites. 
Cultures were made bv Wilson and Chowning and bv mvself from 
the blood of patients during life and from the organs and tissues at 
autopsy, and the only bacterial growth obtained was Sta.jjhyl ococcus 
ejndermidis aJhus, Staphylococcus pjyogenes aureus alhxi.s^ Bacillus 
coli^ and in one case an anaerobic spore-bearing organism was obtained 
from the spleen. Xo one organism was constant, and from some cases 
no growth at all was obtained. 
In the table which follows is gathered a complete collection of all 
the cases which have been reported by the physicians of western Tlon- 
tana since 1885, when the disease first attracted attention. Cases 1 to 
111 Avere compiled by Wilson and ChoAvning and the remaining cases 
by myself. 
