OUTLINE OF WORK AGAINST CHINCH BUG. 
15 
In comparing the First Annual Report of Dr. Snow for 1891 with 
the last one for 1896, we find statements which would lead us to 
believe that the artificial distribution of the disease had at least the 
-O CD 
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effect of increasing the amount of Sporotrichum, even if we doubted 
its first introduction into Kansas in the nineties. 
In the report of 1891 we read : 
It must be remembered that these contagions diseases of the chinch bug are 
naturally present in certain portions of the Mississippi basin during every 
10944°— Bull. 107—11 r 2 
