THE FLORAL WORLD AND GARDEN GUIDE. 181 
should be repeated about two days afterwards. The evening is the 
best time for fumigating, and still weather should be taken advan- 
tage of. Remove all plants in bloom previous to the fumigation, as the 
flowers soon fall after the exposure to the tobacco smoke. The foliage 
must be perfectly dry at the time, but a thorough syringing is desirable 
in the morning following. Fruit trees trained to open walls may, 
with the aid of a tarpauling, be fumigated; but, speaking in a 
general way, destroying aphids with smoke on trees and plants out- 
of-doors is a very troublesome business. 
The best of the insecticides that can be employed in a dry state 
is tobacco powder, which can be obtained at all nurseries and seed 
houses. The foliage should be damp when the powder is applied, 
and with the aid of the puff sold for the purpose, or a medium 
‘sized dredge, the under side of the leaves, as well as the surface, 
must be well dusted. Soft-leaved plants, such as calceolarias and 
cinerarias, must be well syringed in about twenty-four hours after 
the application of the powder. 
A very effectual remedy in a liquid state is prepared by steeping 
shag tobacco in hot water at the rate of four ounces to the gallon. 
Quassia chips steeped in cold water, at the rate of two ounces to the 
gallon, is also most effectual in the destruction of aphids. In both 
eases a little size should be added to ensure the solution adhering to 
the insects. Immerse the plants, if practicable, bottom upwards in 
the mixture, or, if this cannot be done, thoroughly syringe them, 
but the first is the most economical method of using it. Shoots of 
Tose and fruit trees should be dipped separately in a vessel con- 
taining the liquid. 
CeLery Fry.—The larve of the Celery Fly (Tephrites ono- 
pordinis) in some seasons do much mischief to the celery crops, 
and as yet no effectual remedy has been discovered. When celery 
is infested with the larve the leaves become blistered and turn 
yellow, and as the grubs are underneath the blisters, they may be 
rushed between the finger and thumb. The grubs, when full- 
grown, descend into the earth, and remain in the chrysalis state 
until the following spring, when they give birth to the fly, which in 
due course deposits the eggs on the leaves. Therefore to prevent 
the attack of the pest the next year, leaves badly infested should be 
removed and burnt, to prevent the grubs attainingtheir full develop- 
ment. 
Meaty Bua (Cocus adonidum) is one of the’ worst enemies with 
which the cultivator of stove plants has to wage a warfare. It 
multiplies so rapidly, and is so tenacious of life, that unless the 
utmost vigilance is exercised and remedial measures resorted to, it 
will soon spread over a house of plants, and do considerable 
injury. The mealy bug resembles small tufts of white cotton 
wool, and is exceedingly troublesome when it finds its way 
to grape vines, for if allowed to spread, and it is no easy 
matter to hold it in check, it will render the crop quite worthless. 
In the case of ornamental plants the only course that can be 
taken is to overhaul them, and wash away every cluster of the 
pest with the aid of a small hard-brush, water, and soft soap, 
June, 
