REMEDIES AGAINST THE CRANBERRY FIRE WORM. eis 
dusted on the bottom of bex and several larvie were introduced. In 
seeking to escape, all came in contact with a few particles: the effect 
was seen in half a minute; the larva began to squirm and to eject a 
greenish fluid from its mouth; in three minutes it was paralyzed; in 
fifteen minutes quite dead. Tried in a solution, one-quarter pound to 2 
gallons of water, a singlesmall drop produced a like effect, and this ap- 
parently irrespective of the spot where it touched the larva. Applied on 
the bog its effect was less satisfactory; the difficulty of reaching the 
larva in its hiding place was great and the powder lost power very rap- 
idly: still a great decrease in the number of larve was noted. I tried it 
both in solution and putting on the powder pure. Later, Dr. Brakeley 
continued the experiments during my absence; the powder was thor- 
oughly mixed with two and one-half times its bulk of cheap rye flour 
and applied with the bellows on a few rods of bog; at first no effect wax 
perceptible, but two weeks thereafter the limits of the patch to which 
pyrethrum had been applied were distinctly traceable ; where it had been 
used the vines were bright and fresh and were sending up. vigorous 
shoots, while the surrounding space was all eaten up. The same mix- 
ture wastried on two larvee which were placed in a vessel dusted with it. 
In a short time they became nervous, began a vigorous battle, and in a 
few minutes succumbed, though they did not die for some time there- 
after. 
Carbolic acid.—With this I made a few experiments which proved 
eminently unsatisfactory, killing the plants when strong enough to 
hurt the insects, and becoming harmless to insects and plants at about 
the same point. Squibb’s solution, containing 1 per cent. of the crude 
phenols in water, was used as a base. 
Kerosene.—W ith this the most extensive experiments were made, as 
it seemed to me best calculated to reach the insects; the vines are not 
easily affected by it, and it is penetrating enough to soak through a leaf 
or two and reach the insect in its hiding place. A number of experi- 
ments were tried to test its killing power. Animperfect emulsion of 2 
parts kerosene to1 part of milk was tirst used and diluted with 20 parts 
of water; a small drop was applied to a number of larvae; the effect 
was instantaneous ; the larve seemed paralyzed at once, though they did 
not die for some time. A number of sprays of which the leaves at the 
tip were turned and spun up by larve were gathered, and a drop of the 
mixture was applied at the tip; the oil penetrated at once through 
every part of the leaves touched, and came into contact with the larva 
immediately, paralyzing it at once so that it could not leave the head, or, 
in some cases, it attempted to escape and was disabled before getting 
out. An emulsion of 2 parts kerosene to 1 part milk was made, mixed 
with 16 parts of water to one of the emulsion, and applied to the vines 
with a Lewis syringe. Inthe evening they were-examined and a num- 
ber of dead larve were found ; traces of the oil could be everywhere seen, 
and where a drop had fairly struck a tip the larva was dead; for three 
8993—Buli, 4——2 
