February, '15] 



BROWX-TAIL MOTH DISCUSSION 



85 



parasites. For various reasons none were reared. In hunting for 

 larvae, the presence of empty burrows was very noticeable, so much so 

 that in the notes taken in 1911-12, it was estimated that there must be 

 from 50 to 80 per cent of parasitism. 



Peevextive [Measures 



At the time of the outbreak, it was recommended that all the infested 

 twigs should be cut out and burned, or that if the tree was trimmed 

 and pruned properly, the insects would be disposed of. This was 

 done, to a large extent, and as we heard of no outbreak in 1913, the 

 trimming must have been effective. 



]\Ir. J. ]\I. Aldrich: I would like to ask ]\Ir. Ruggies if he reared 

 any parasites? 



yiu. A; G. Ruggles: We did not rear any parasites. I was away 

 so much that it was impracticable to attempt to do this. 



Presidex't H. T. Ferx'ald: We will now listen to a paper by C. 

 Gordon Hewitt. 



THE BROWN-TAIL MOTH IN CANADA 



By C. Gordon Hewitt, Ottawa, Can. 



(Paper not received in time for publication.) 



President H. T. Ferxald: This paper is now open for discussion. 



Secretary A. F. Burgess: Last spring, through the courtesy of 

 Dr. Hewitt, I had an opportunity to visit New Brunswick and Nova 

 Scotia and go over a part of the infested territory. This made it pos- 

 sible for me to see the difficulties under which his men were obliged to 

 work during the long cold Tvanter which is usually accompanied by 

 deep snow. 



The territory is not provided -with good transportation facilities, 

 particularly in New Brimswick, and this makes it very difficult for 

 the men to do the work. 



I was greatly impressed with the conscientious and hard work which 

 had been done by the field men in that territory. Dr. Hewitt has 

 indicated the distribution of the brown-tail moth in Nova Scotia and 

 New Brunswick, the outer line representing the territory found in- 

 fested in the Tvdnter, 1913. In the spring of 1914, we made a trip 

 through the southern part of New Brunswick from St. John to St. 

 Stephens; thence to Woodstock, New Brunswick, and Houlton, Maine, 

 and returned to St. John. 



