272 FUMIGATION METHODS 
the following letter. It isa valuable contribution, and 
should be read by every wide-awake miller and grain- 
dealer: ‘‘We have delayed answering your valued 
letter until we were able to report the result of our 
efforts to destroy the weevils in our mill. Following 
the line of your advice, we ran our stock down low and 
thoroughly renovated our mill from top to bottom, 
cleaning all reels and purifiers. We then fumigated 
the whole building with carbon bisulphid. We dis- 
tributed 300 soup-plates about half filled with bisul- 
phid through the mill, and saturated balls of cotton 
with the same material and placed them in all the reels 
and purifiers. We did this on Saturday night, closed the 
mill tight and left the weevils to their destruction. 
‘“We opened the mill Monday morning and 
thoroughly ventilated it before enteringit. We found 
we had destroyed thousands of the pests, and in the 
reels and purifiers we had killed them all. In the 
course of a few days a few insects began to show up in 
the cracks in the floors and in dark corners. "Two 
weeks later we repeated the dose in the same manner 
and obtained about the same results. In the mean 
time we whitewashed the mill from top to bottom 
(that is, every place that could be covered), putting on a 
good heavy coat. We have reduced the bugs toa very 
small number, and eternal vigilance is the order of the 
day with us. 
‘‘ We are still fighting them. Our plan is to keep 
a stock of bisulphid on hand outside of the main build- 
ing. We do not think it is advisable to store it in the 
mill. Wherever we find a place infested by the weevil 
we use it freely, taking care to do it whe: the miu is 
