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DESCRIPTION OF THE WHISKS. 
Whisks to be used in forcing the various liquid mix- 
tures among the leaves and branches of trees or plants on 
which they are applied, may be made of a few branches 
tied together of common birch, broom, or any other fine 
twigged trees, while in their leafy state. It is intended 
that those wisks shovdd not be too sharp or rough, nor used 
with too great a force, so as to bruise the leaves or fruit, 
but still to brush them smartly enough to disperse and force 
the liquor in fine particles all over the trees. 
GARDEN ENGINES. 
Garden engines are so common that I need not describe 
them. I may say that they are so useful that no horticul- 
turist should be without them. Good tin ones, holding 
twelve gallons, may be procured at from 30s. to each, 
which will last a considerable time, with care, but the copper 
ones are much preferable, owing to their durability. Good 
ones may be had, holding twelve or fourteen gallons, at the 
prices of from £8 to =£?10 each, in any of the principal towns. 
In using the engine, the end of the pipe must be pressed 
tight with the finger, so as only to let the mixture come 
out like the finest rain, or a fine rose may be used instead 
of the fingers. 
GROWTH OF TOBACCO, AND PREPARATION 
OF TOBACCO WATER. 
When it is necessary that tobacco should be grown, for 
the destruction of insects, I would give the following hints. 
In order to produce it fine and perfect soon on in the Au- 
tumn, to afford a better opportunity of drying, it will be 
proper to assist the growth of the seedlings, by a gentle 
artificial dry heat. In this case the seed should be sown 
about the middle of March, and as soon as the plants are 
