21 
The facts presented in this table certainly support the idea— 
•med by many recent observations—that, where circumstances 
voi the chinch bug that it passes beyond the stage of a gen- 
iependence on a large wheat area, it finds first in oats and 
in grass, a sufficient support for its maintenance, and even 
s moie or less rapid increase. It is certainly a circumstance 
lallenge the attention of the student of this subject that an 
?ing acreage of oats has invariably gone along with an in- 
ng damage to every crop in Southern Illinois, while the 
' area t a s there increased with the corn injury, stood still 
increasing injury to grass, and diminished with the growing 
ge to small grains themselves. 
Table XII. 
Whole State, 812 Toitms. Injury to Small Grain, 1887, com¬ 
pared with Crop Areas for the Same Year. 
jree of Injury. 
No. of 
Tps. 
Wheat. 
Barley. 
Rye. 
Oats. 
Corn. 
Grass. 
e. 
•able ... 
3at. 
omplete 
e. 
392 
154 
62 
93 
34 
55 
16 
6 
1,184 
43 
1,432 
54 
2,146 
103 
2,700 
12 
2, 650 
56 
2,621 
4 
1,727 
1,110 
23 
185 
173 
126 
54 
80 
34 
13 
7 
2, 724 
2,743 
2,057 
1,902 
1,835 
2,166 
2,240 
3,042 
5, 250 
4,905 
3, 145 
3,125 
2,996 
2,925 
2,932 
3,008 
6, 652 
6,387 
4,481 
3,631 
3,798 
3,378 
3,155 
5,014 
1 tab le for the whole State amounts, as before, to but little 
than a recapitulation of the exhibits for the several sections, 
heat areas rising with increased injury to wheat and oats 
the central and northern figures preponderate, as in the 
grades of injury, and falling where the series comes under 
ntrolling influence of the Southern Illinois reports. 
COMPARISON OF THE CROPS FOR 1886 AND 1887. 
les of the crops for 1886 were prepared of the same number 
laracter as those for 1887, with a view to determining the 
of agricultural practice and its possible relation to the ap- 
ce and development of the chinch bug; but after a careful 
of these tables in comparison with those for the following 
ffiey do not seem sufficiently important to make their de^ 
treatment necessary. 
main features of difference were a great general increase in 
beat area for 1887 (twenty-five to thirty-five per cent.) in 
Southern and Central Illinois, except in those districts where 
inch bug was most destructive. There, possibly because of 
far serious loss in 1886, the wheat acreage had been reduced 
•OS varying from ten to twenty-five per cent.,—much more, 
n- in regions where small grain had been destroyed than 
the corn was a total loss. 
