SMITHSONIAN INSTITUTION LIBRARIES 



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soil containing them will produce little or no effect upon the incloj^ed insects. 

 The arsenicals, notably Paris green, are, as with the former species, the most 

 efficient and economical means of controlling this insect. If it be desirable, how- 

 ever, to proceed against the moths, the barriers applied to the trees for the pur- 

 pose of preventing the adult insects from ascending and depositing their eggs 

 should be put in place early in October, or before the first moth makes its appear- 

 ance, and the adhesive substance applied to the bands should be renewed as long 

 as any of the moths are to be found, after which the bands may be removed and 

 destroyed by burning or otherwise. Care should be exercised in removing the 

 bands before the season for the eggs to hatch, otherwise the very object which the 

 bands were intended to accomplish will be defeated. 



Approved : D- W. Coquillett, 



J. Sterling :Mortox, Assistant, Division of Entomology. 



Secretary. 



Washington, D. C, ifay 34, 1895. 



