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must be attacked directly, and while on the plants they infest. It is 
true that there is usually one brood or generation that passes the win¬ 
ter in the egg state; but so far the closest scrutiny has been enabled 
to follow but few through this period, and the eggs are not only so 
minute as to render their discovery difficult, but they are more tena¬ 
cious of life than the adult apterous individuals of the summer broods. 
It is apparent, therefore, that the most accessible point and vulnerable 
period of their existence is during the summer, while they are at work 
upon the plants; and the remedy must be one which will destroy the 
lice without injuring the life or value of the plant. As they are too 
minute to be picked off by hand, even from the most valuable plant, 
if at all numerous; and cling by their inserted beaks too closely to 
the leaves and bark to be easily dislodged, our remedies are limited 
almost entirely to direct applications of such character as will kill 
them without destroying the plant. 
In some cases as with the cabbage and some other garden vegetables, 
some small plants, such as flowering annuals, pot plants etc., which 
are attacked bv species which limit their operations to the leaves, it 
is possible, by* being watchful, to check them by removing, as soon as 
they appear, the leaf or leaves on which they commence operations. 
If this is done in time, and any stray winged specimen seen on the 
plant destroyed, the remedy may be effectual. This is one of the 
remedies practiced in England for the species which attacks the turnip 
crops. While it is often well to make use of this remedy, especially 
m cases of isolated pot and some othei plants, the objection to idl¬ 
ing wholly upon it even in these cases is, that if but a few stray in¬ 
dividuals are overlooked they soon spread their colonies over the fol¬ 
iage, and some more effectual means of destroying them has to be 
adopted. 
The following are some of the remedies which have been suggested, 
each of which may, under certain circumstances, be used with advan- 
f ^ 0*0 * 
One of the most common, and one easy to apply, is drenching the 
plants infested, with strong or acrid solutions, such as strong soap-suds, 
weak lye. tobacco wateC lime water, soap-suds and tobacco water, 
mixed, to which sometimes sulphur is added, etc. The application to be 
made as complete and thorough as possible. 
Where the plants cannot be thoroughly drenched, which is usually 
the case the solution may be applied with a watering pot or garden 
SYr in^e, or on the limbs or twigs of trees with a whitewash or other 
similar brush, or even an old broom. Such application, it must be re¬ 
membered, only destroys the lice it touches, and if but a few, here 
nnd there are ‘left, their powers of rapid reproduction will enable them 
soon to establish new colonies, and the work will have to be done 
over again; hence, wherever the plants can be absolutely drenched, 
this is the best method. Where the terminal twigs and leaves only 
of bushes and low trees are affected, these may be bent down and 
dipped in a basin holding the solution. A solution of strong carbo¬ 
nate of ammonia—half an ounce to one quart of water is recommend¬ 
ed especially where the lice are on fruits or leaves which are to be 
eaten as it‘is both clean and effectual. Another remedy, where the 
application is on an extensive scale, is dusting the plants with lime; 
this is recommended by Dr. Harris for mlested potato fields; I would 
