L68 (iVPSV AM) BROWN-TAIL MOTHS. [Jan. 



That our comparative freedom from the brown-tail moth plague 

 dnrhiir the year just closed was not due entirely to this disease 

 is evident t'mni the fact that in a few cities and towns where, 

 because of local complications, the campaign against the insect 

 was not vigorously prosecuted during the winter of 1906-07, 

 there was a considerable amount of damage and annoyance 

 caused by the caterpillars during the late spring and early 

 summer. This fact alone is sufficient to indicate the wisdom 

 of n. nt inning the work against the moths by the use of those 

 methods which have been tried and found to be effective. 



1 hiring the spring of 1907, before any of the caterpillars 

 had an opportunity to emerge, a large number of brown-tail 

 moth webs were collected at various points in the district, TO 

 determine the death rate from the fungous disease, cold or other 

 causes. At the suggestion of Prof. E. D. Sanderson, Durham, 

 X. H., we also secured data as to the relative death rate on 

 high land v. low land. The results so obtained are presented 

 in the following table:- 



