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/ 
[If the blood could be applied to the stems and 
branches of the trees as a painting, there would not be 
difficulty in applying a good painting or scrubbing with a 
thick soft-soap solution, which would probably have an 
excellent effect.— Ed.] 
In regard to methods of application one great difficulty 
is how to throw the fluids high enough to reach the 
upper boughs and foliage of moderate-sized trees. Of 
this Prof. Comstock says that the difficulty is best met 
by using some kind of force-pump, by which mixtures 
can be sprayed on the infested plants. The pump he 
recommends is formed of two brass tubes, one working 
telescopically within the other; a hose is fastened to one 
end, and a rose can be attached to the other ; an arrange¬ 
ment of valves allows water to pass into the pump 
through the hose, but will not allow it to return. Thus, 
when the smaller tube is pulled out the pump is filled to 
its greatest capacity ; by pushing this tube back the 
water can he ejected with considerable force through the 
rose in a fine spray. By using a nozzle with a single 
opening a stream can he thrown to a greater distance. 
In this way the topmost leaves of any orchard tree can 
be reached. In applying liquids on a large scale, as 
upon extensive orchards, the work can be done rapidly 
by placing the mixture in a barrel upon a waggon, and 
pumping directly from this barrel. It is noted that 
from the great difficulty of wetting every part of the tree 
by a single application, that probably several will he 
necessary.* 
Destruction by Hand-picking and shaking down 
the Bug from infested trees. 
Prof. Trimen states that he regards it as of “the first 
importance to destro}^ all the larger specimens, for from 
these legions of young are perpetually proceeding, and 
* ‘Report of the Entomologist of the United States Department of 
Agriculture for the year 1880.’ By H. Comstock Washington, 1881. 
