INSECTS. 137 
Many different methods have been attempted 
to prevent the ravages of this insect, but 
each one is more or less unsatisfactory. The 
area grown to wheat should be diminished. 
All trash about infested fields should be as 
fully burned as possible in fall, winter or 
spring. Insecticides may he used to advantage. 
Kerosene emulsion, diluted to about five per 
cent, is perhaps the most effective insecticide. 
To make the emulsion take one-half pound of 
common soap and dissolve in one gallon of hot 
water, after which add to the boiling mixture 
two gallons of kerosene and churn the mixture 
violently for about five minutes with a hand 
force pump. This may be diluted with water 
to make 30 gallons for use. This seenis to be 
about the best of the insecticides for chinch 
bugs. 
For some years past experiments have been 
conducted to propagate among chinch bugs a 
fatal disease. A large amount of work has 
been done by Prof. Εἰ, H. Snow of Kansas Uni- 
versity in this direction. A peculiar fungi be- 
ing placed in contact with the bug soon causes 
its death. Healthy bugs may be inoculated 
with the disease and set at liberty in the in- 
fested fields and may spread the disease with 
such great rapidity as to practically annihilate 
the bugs. A perfect epidemic of the disease 
occurs, This fungus may be propagated and 
