THE CHINCH BUG. 
33 
Precipitation. 
1885. 
1886. 
Part 
1887. 
Illinois: 
Inches. 
31.99 
44.37 
38.61 
30.70 
32. 58 
19.96 
22.68 
25.33 
16.58 
'47. 05 
45.59 
HI. 11 
23. 71 
43.64 
Inches. 
37.98 
26.77 
31.69 
22.49 
31.46 
33.37 
26.76 
22.89 
15.04 
33.48 
44.34 
28.24 
19. 35 
22.25 
Inches. 
26. 75 
29.13 
25. 15 
Wisconsin : 
17.37 
30.46 
Minnesota : 
JJuluth 
28.56 
21.97 
25.85 
18.47 
Missouri : 
35.72 
35.30 
Kansas : 
25.26 
15. 80 
37.05 
Ten months' record. 
Eight months' record. 
REMEDIES AND PREVENTIVES. 
The remedies and preventives recommended as late as the publication 
of Professor Kiley's 7th Eept. Ins. Mo., and there considered by him are 
as follows : Irrigation, burning, trapping, trampling, rolling, manuring, 
early sowing, mixing seed, or protecting one plant by another, prevent- 
ing the migration from one field to another by upright boards or by 
plowed furrows or ditches, abstaining from cultivation of grains upon 
which the insect feeds. These remedies were also treated in detail by 
Dr. Thomas in Bulletin 5 of the Commission. Since this, although many 
changes have been rung in the agricultural newspapers on these reme- 
dies, very few entirely new ideas have been advanced. We may men- 
tion more particularly, before taking up a more detailed consideration 
of this question, the successful adoption of the kerosene emulsion for 
application at the time of migration or immediately afterwards. 
Preventions. 
Clean Cultivation. — With no insect more than the Chinch Bug is there 
greater necessity for clean cultivation. We have shown already that 
the insect hibernates under rubbish of all kinds, and that the grass and 
weeds growing in the fence corners and the leaves which accumulate there 
are admirable places for these insects to collect and winter. Where 
corn-stalks are left in the fields, and where rubbish of any kind is al- 
lowed to accumulate, there the bugs will surely be found. Therefore, 
the more thoroughly a field is cleaned up in the fall, the more carefully 
the fence corners are weeded out, and the more the bare soil is turned 
under the fewer will be the chances for successful hibernation. 
Diversified Farming. — It follows from what we have said concerning 
food plants of this insect and the crops most attacked, that, from the 
12734— Bull. 17 3 
