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■children), each of which is furnished with the following instru¬ 
ments: (1) A sheet of burlap three yards by two, in the ends 
of which two flexible sticks are fastened. Strings intended to 
support the apparatus are attached to these sticks. (2) A long 
pole armed with an iron hook. (3) A sack of coarse cloth, lhe 
sauad being thus equipped, two hold the sheet extended under 
the branches. Owing to the flexibility of the rods at the end, 
the surface of the sheet easily takes the concave form of a com¬ 
mon hammock. The branches are then shaken with the hand 
or with the hooked stick, and the cockchafers fall upon the cloth 
and accumulate in the center/' 
Between 2 and 5 o’clock a. m. is the best time for capturing 
our American June beetles. If they are thus collected inveiygrea 
numbers, they may be most conveniently killed by throwing them 
into tubs or barrels of water with kerosene on the surface. It the 
number is so great as to be likely to be offensive if left to decay, 
they may be scattered upon the fields as a fertilizer. 
The foregoing method is but little likely to be brought into 
use on the scale required to make it effective unless the white 
grubs become, at least locally, more destructive than they 
are at present in any part of the State of Illinois. It is qui e 
within the bounds of possibility, however, that this or some 
similar method will be ultimately forced upon the American 
farmer. 
Our June beetles are strongly attracted by lights; a disposi¬ 
tion which may be used for their destruction m fields. An ap¬ 
paratus consisting of a lantern suspended over a tub of water, 
placed in or near trees or groves resorted to by the beetles, will 
often collect large numbers of the adult insects, which, Hying 
against the lantern, drop into the water, where they are readily 
killed if a little kerosene has been poured over the surface, this 
method is, however, of little value as compared with that above 
described, since it attracts males in very much greater propor¬ 
tion than females—sometimes fifty of the former to one of the 
latter. It is also ineffective on moonlight nights, and when the 
weather is cool or windy; is much more expensive; and, undei 
the most favorablp circumstances, less thoroughgoing. Its 
effect is shown by office notes made in 1888 and 1891. June 9 
of the former year one hundred and twenty-seven beetles were 
caught in a pan fifteen inches across partly filled with water and 
kerosene, above which an ordinary lantern was suspended, tie 
apparatus being placed on a bench under trees, m Ur ban a. 
Ill. A similar experiment, made May 7, 1891, with a tul) ot 
water and oil and a common kerosene lamp yielded 1,^99 beetles, 
of which all but forty-one were males. In this case the trap was 
placed in a small forest plantation on the University farm at 
Urbana. These beetles were all taken between <:4o and 9:1 o 
p. m., after which only now and then one would come to the 
