100 
Harrison directs, with boiling water, which will 
be preferable to his other method, crushing them 
with a spade. 
Forsyth’s lime-water, I am sorry to say, 
does not prove effectual, for had it done so, we 
should have been in possession of a cheap re- 
medy. 
Beattie’s method, though it may be justly 
said to be an alteration upon Forsyth’s original, 
we caimot say claims, any merit, for it is void of 
the necessary qualifications. 
Weighton’s plan of watering with the en- 
gine (I suppose with clear water, as no other 
ingredients are mentioned) has no effect whatever, 
either to destroy the insect or retard its progess. 
Dr. Rees gives an account of some having 
been “ immersed with the plant which they were 
on all night in water, after which they survived,” 
which will suffice to show the effect of washing 
with clear water; and his plan of picking off the 
young shoots would destroy many ; but if they 
are always to be picked off' when the trees are 
numerously visited, I must say, with the old pro- 
verb, that the cure would be worse than the 
disease. 
Parkes leaves us to find the quantity of salt 
to be applied, and the time of its application, but 
the other part of his letter, where he quotes 
Hitt’s practice with salt, tends to throw some 
little more light on the subject, from which we 
may infer tliat the salt water, and the salt when 
