I 
fallen. That is, 33 per cent, of the number of the stalks which 
should have been erect in the injured hills had been made to fall, and 
19 per cent, of them had been weakened sufficiently to cause them to 
lean or bend. More generally speaking, 67 per cent, of the stalks — 
that is, 242 out of 363 — had been either killed or noticeably injured 
in the infested hills. 
The ratio of damage to the plant as a whole may be more simply 
and forcibly shown by saying that in the uninjured hills there were 
306 stalks erect and in good condition, while in the injured hills 
there were but 64 such stalks. In other words, the bill-bugs had 
killed or palpably damaged 79 per cent, of the stalks in the infested 
hills which would have continued in good condition except for this 
insect attack. 
As aifecting the Bars. — Comparing the two lots with reference to 
the number and condition of the ears borne by them respectively, we 
find that the uninjured hills bore 349 ears of all kinds, and the in- 
jured hills 211, — a loss of 138 ears, or 40 per cent, of the whole. Of 
the uninjured corn 282 of the ears were graded as good, 44 as fair, 
14 as poor, and 9 as nubbins, while the injured corn bore 24 good 
ears, 75 fair ears, yz poor ones, and 40 nubbins.''^ (See Fig. i.) 
Otherwise stated, besides the 40 per cent, of the ears which had been 
sacrificed to the bill-bugs, 9 per cent, had been considerably injured 
and 26 per cent, had been badly injured as a result of bill-bug at- 
tack. Not less than 75 per cent, of the ears in these hills were thus 
either lost or seriously injured. 
The loss in number and condition of the ears borne by infested 
hills may perhaps be more clearly illustrated by the statement that 
282 good ears were borne by the uninjured hills and only 24 by the 
injured, — a loss and injury combined amounting to 81 per cent. 
It further appears from the data in hand that the uninjured hills 
bore 96 ears per hundred stalks, and the injured hills 67 ears per 
hundred, — a loss of thirty per cent, in number of ears per hundred 
stalks, — and that the uninjured corn yielded an average of 200 good 
or fair ears per hundred hills, and the injured corn 73 such ears per 
hundred hills, — a loss of 61 per cent, in number of fairly good ears. 
ToTAiv Amount of Injury. 
The above ratios do not hold, of course, for the entire field, but 
only for the part injured, and for an understanding of the condition 
of the field in general an estimate of the percentage of injured hills 
is necessary. Six hundred and eighty-two hills were examined for 
*"Fair ears" were of medium size and imperfectly filled, "poor ears" were short and 
poorly filled, and nubbins were short, small, and not filled to the tip, and were otherwise de- 
formed, with poor and injured grain. 
