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and in some cases seriously damaged numerous street trees. Many 

 horse-cliestuut, elm, pear and cherry trees stripped in midsummer 

 by this insect in Boston, Chelsea, East Boston and Charlestown 

 have been unable to throw out a second crop of leaves (like the 

 linden) and are as bare as in winter. To prevent the ravages of 

 this pest in the cheapest and most eflicient manner the infested 

 trees should be thoroughly cleaned of the nests in the winter when 

 the branches are bare. These nests^ from their white, frothy 

 appearance, are readily seen and easily removed. Where they 

 occur in crevices in fences and in other places difficult of access, 

 they may be destroyed by the use of crude mineral oils. After 

 the larvae hatch, trees where they are most abundant should be 

 heavily sprayed witli arsenate of lead wherever it is practical to 

 do so. In the same way, so far as possible, trees which have been 

 cleared of nests should be isolated from infested trees by means of 

 Raupenleim or other suitable bands, those in public places being 

 put on at a sufficient height from the ground to prevent injury to 

 the clothing of passers by. These metliods, if thoroughly enforced, 

 will reduce the numbers of the pest in localities where employed 

 to a point where it will do no particular damage. 



