this purpose, and 199, or 29 per cent., were found injured; from 
which we learn by a simple computation that approximately 12 per 
cent, of the ears which the entire field should have yielded were lost 
in consequence of bill-bug injury, and that 7 per cent, were badly 
injured and 3 per cent, considerably so. 
Fig. 1. Sample Ears from Dalbey field; "f^ood," "fair," and "poor" grades of tbis paper. 
Samples of uninjured ears and of those called badly injured, 
brought in by Mr. Titus, indicate that the yield from "fair ears," 
"poor ears," and nubbins would not be more than one third of that 
from an equal number of ears of the uninjured corn. It is proper to 
add, consequently, to the 12 per cent, of total loss some two thirds 
of the 10 per cent, of injured ears, making another 6 per cent, of 
loss, or a total of 18 per cent, for the entire field. 
This conclusion is substantially supported by the owner's esti- 
mate of twenty bushels per acre for the infested area and fifty 
bushels for the uninfested ; since, by using the above-mentioned 
ratio of 29 per cent, for the number of hills injured, we find that the 
average yield would be 41.3 bushels per acre, a quantity loss of 8.7 
bushels per acre because of bill-bug injury, or 17 per cent, of the 
normal yield. No account is taken in this estimate of the deteriora- 
tion in quality of the injured corn, which, if included, would increase 
the loss materially. As the season was a favorable one for corn, and 
as the variety used (Reid's Yellow Dent) was reported to have 
hardened much earlier than other varieties planted at the same time, 
this loss is probably under rather than over the general .average un- 
