232 GEOLOGICAL SURVEY OF NEW JERSEY. 



As to spraying machinery, pumps, nozzles, &c., that branch 

 of 'the subject will be found treated in the reports and bulletins 

 of the Agricultural College Experiment Station. 



A very important method in European forest culture is band- 

 ing with " Raupenleim " or similar sticky mixture impassible to 

 caterpillars. This is employed chiefly against the larvae of the 

 Gypsy moth and the brown-tail moth, both of which now occur 

 in the United States, but have not yet been found in New 

 Jersey. At the present time there is no species against which 

 such a method could be profitably employed in our forests, and 

 it, as well as the allied method of trapping under cloth bands, 

 requires more or less continuous attention. On a limited area 

 of a park-like character burlap bands, such as are in use by the 

 Massachusetts Gypsy Moth Committee, may prove useful as 

 traps to many kinds of leaf-feeding forms that resort to it for 

 concealment or for the purpose of pupation. 



Such bands to be of any practical use must be examined at 

 least once a week for the purpose of destroying what insects 

 may be hidden there ; hence their use presupposes a tract 

 sufficiently valuable to justify the employment of some person 

 sufficiently intelligent to exercise some discrimination in 

 killing. 



Finally, it may not be amiss to say that not one-fourth the 

 damage actually caused by insects in our New Jersey forests 

 could occur did not fires, great or small, first pave the way. 



