THE CHINCH BUG. 39 
the bugs are destroyed." According to Dr. Le Baron this method was 
extensively used in the central part of Illinois and especially in the 
vicinity of the Bloomington gas works in 1872. He saw the operation 
performed near Blooniington, where the tar was poured from an old 
tea kettle on the ground along the exposed sides of a corn-field. This 
remedy, however, will seldom be used on account of its expense, except 
in such situations as that mentioned, where the tar can be readily and 
cheaply procured. 
Solving Strips of Plants distasteful to the Bugs around the Fields to be 
protected. — This remedy has been urged by certain authors, and the crops 
to be used as barriers are preferably Flax, Hemp, Clover, and Buckwheat. 
The effect of this will be to deter and destroy the migrating individuals 
and cause the death of the young ones by starvation. It is, however, 
not a thorough remedy, and is not to be compared with the more direct 
remedies which caused the almost complete destruction of the insect. 
Solving Strips of favored Food around the Fields to be protected. — A strip 
of Timothy, Hungarian grass, or Millet may be sown around the corn- 
field to good advantage with the object of entrapping the migrating 
bugs by plowing it under and burning the ground over when it has be- 
come filled with the migrating armies in transit. The bugs of the first 
generation, which are full grown, will lay their eggs by preference in 
this protective strip, and these will be destroyed by the plowing and 
burning. 
Hot Water and Soap-suds. — The application of strong soap suds to the 
insects when gathered upon the outer rows of corn was recommended by 
a writer in the Southern Planter many years ago, and was also given 
by Dr. Fitch. Statement is made that a half gill or a gill poured upon 
each stalk will kill them all, and that the labor is not half so great as a 
single hoeing of the crop. Hot water has been recommended for a* 
similar purpose by subsequent writers. 
Kerosene Emulsion. — A new and, under certain circumstances, very effi- 
cacious remedy for the Chinch Bug was introduced when Professor 
Eiley, in 1882, first suggested to Professor Forbes the advisability of ex- 
perimenting with this substance upon this insect. Professor Forbes's 
first experiments were reported to this Division and the results were 
published in Bulletin No. 2 (February,' 1883), pages 23 to 25. The fol- 
lowing solutions were used in these experiments : 
Solutions with which dilutions were made : (1) Soap-suds, 1 pound soap to 10 gal- 
lons water; (2) soap-suds, 1. j>ound soap to 20 gallons water; (3) potash, 1 pound to 
50 gallons water. 
EMULSIONS AS DILUTED. 
Per cent, of kerosene. 
A. 2 parts kerosene, 1 par!; milk, 45 parts water (about) 4 
B. 1 part kerosene, 1 part milk, 18 parts water ,.. . 5 
C. 1 part kerosene, 1 part milk, 18 parts solution 1 5 
D. 1 part kerosene, 1 part milk, 38 parts solution 2 2£ 
E. I part kerosene, 1 part milk, 38 parts water 2-J 
F. 1 part kerosene, 1 part milk, 38 parts solution 3 'l\ 
G. 1 part kerosene, 1 part milk, 30 parts solution 2 3 
