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3d. Some of the worst insects which infest the strawberry appear 
in the adult stage in swarms during a comparatively short period, 
and may then be entrapped by attracting them by lights exposed in 
the fields, and so arranged that the insects approaching the lights 
shall be caught in vessels of water. A glass lantern so suspended 
over a tub of water that beetles flying against the glass will drop 
into the water beneath, is a simple and effective device which may 
be depended upon to capture the May beetles and other adults of 
the various white grubs. If the water be covered with a film of 
kerosene, the insects falling into it will be speedily killed. The 
especial object of this method of warfare is to destroy the adults as 
they emerge, or as they resort to the field to lay their eggs. 
3 ¢. Asa general measure of protection, it is sometimes expedient 
to rake and burn the muich and rubbish late in autumn, after 
insects have resorted to their winter quarters. 
3 f. For thousand-legs in the strawberry field, the plan of scat- 
tering slices of potatoes or other vegetables between the rows, and 
killing by hand late at night and early in the morning the myria- 
pods attracted to them, has been recommended by good authority. 
3g. Thick-stemmed weeds in and about the field should be de- 
stroyed if the stalk-borer is likely to be injurious. 
4, Topica APPLICATIONS. 
4a. For all leaf-eating species occurring in summer after the 
fruit is picked, except possibly those which feed concealed within 
the rolled and curled leaves, sprinkling or spraying with Paris green 
or London purple in powder or suspended in water, is a feasible 
remedy. It must be remembered, however, that this method 1s of 
no avail against insects which do not gnaw or bite the tissues of 
the plant. It is recommended to destroy the leaf-eating beetles 
whose young are the strawberry root-worms. For this purpose the 
poison should be applied during July and August. It is, of course, 
important that it should be used no more freely than is absolutely 
necessary to accomplish the end desired. 
4b. Powdered hellebore is used, like the arsenical poisons men- 
tioned in the preceding section, for the strawberry false-worm, Hm- 
phytus maculatus. 
4c. For those species appearing exposed while the fruit 1s upon 
the plants, as well as for all those which are not provided with 
biting mouths, powdered pyrethrum is one of the most useful apph- 
eations. This may be either dusted upon the plants, due care being 
taken that it shall reach both the under and the upper surfaces of 
the leaves, or it may be thrown in a spray of water from a hand 
force pump. 
4d. The kerosene emulsion may be applied for the same pur- 
pose as the pyrethrum mentioned above, except that it is not avail- 
able during the fruiting season. 
4 e. Applications of sulphur to the leaves, as well as a spray of 
strong soapsuds, are useful for some purposes. 
4 f. For subterranean larve appearing locally, bi-sulphide of car- 
bon or carbolic acid may be poured into small holes made in the 
ground, as recommended on another page under the discussion of 
remedies for the strawberry root-worms. 
