REMEDIAL MEASURES 



97 



face hardens into a crust, and it is advisable to scrape oft' this 

 crust after the danger from caterpillars is past. Too much 

 of the rough bark should not be scraped oft of the older trees 

 to which the band of Raupenleim is to be applied, unless paper 

 is to be used. 



After the trees are thus banded, tlie caterpillars will collect 

 beneath the bands, and, of course, are to be killed by means of 

 a stift' broom, or any other method one may choose. 



The American distributers of Raupenleim are William 

 Menzel & Co., 64 Broad St., New York, N. Y. In New 

 England it can be purchased through the Bowker Fertilizer 

 Co., Boston, Mass., and probably other dealers. It is put up 

 in five-pound cans, costing about $1,00 per can; or in kegs 

 holding 25 pounds, costing $3.75 P^i' keg. Larger kegs are 

 proportionately cheaper. 



Jar7'i?tg and Banding. — It has already been stated that 

 these caterpillars drop downward when disturbed, breaking 

 the fall by means of a thread spun from the mouth ; although 

 when young and suddenly jarred apparently the thread may 

 not be used. This habit leads to the suggestion that by a 

 combination of jarring and banding much injury may be pre- 

 vented, at least in the apple orchard and on the home grounds. 

 After the trees infested have been banded with the caterpillar 

 lime, a boy with a padded mallet may be sent into them with 

 instructions to jar the limbs on which the caterpillars are 

 working, beginning at the top. This should be done when 

 the caterpillars are feeding upon the leaves as they are then 

 much more easily disturbed than when they are at rest. Of 

 course it is not to be expected that going over once will wholly 

 rid the tree, but by two or three repetitions of the jarring 

 most of the caterpillars should be removed. In case they hang 

 too persistently by their threads many of them may be swept 

 out of the air by use of a long, light pole. This will lead the 

 caterpillars to congregate in masses upon the trunk below the 

 bands of Raupenleim, where they may be destroyed by use of 

 a stiff broom or by various other methods. The earlier this is 

 done after the larvae are all hatched the less will be the injury 

 to the foliage. 



The masses of caterpillars beneath the bands are sometimes 



