204 JOURNAL OF FORESTRY 



The gypsy and brown-tailed moths were accidentally loosed in 

 our eastern forests. Millions have been expended in attempts at 

 their control, with only fair success. Both insects annually appear 

 in extended ranges and their extinction seems beyond any reasonable 

 hope, even if their "control" be proven practicable. Would one care 

 to invest heavily in forest property in the moth area ? 



The chestnut-blight fungus seems to have been imported from 

 Asia, though some question as to this seems to have been raised 

 among mycologists. If the organism should prove to be a native 

 species on a rampage, the situation would be more complex than 

 otherwise, but, in any case its damage is still on the increase and 

 there seems to be little if any hope for the chestnut in America. As 

 a commercial forest species it seems to have become out of the 

 question. In a varigated forest mixture the chestnut was by far the 

 most valuable species and its loss is a most serious affair. 



The black locust has a rather limited native range. In its native 

 range it is attacked by the locust-borer, but in spite of this many 

 individual trees and even whole stands make fair development. 

 Where the locust is planted out of its original ranges it often makes 

 a splendid growth. Its technical value is very high, or rather would 

 be high if it were not for the borer. But the borer seems to be worse 

 in exotic plantations than on the native ranges. In spite of the wide 

 adaptability of the locust, as a forest tree, it is today of very little 

 importance because of its persistent enemy. There seems to be no 

 reason to anticipate any improvement in its status. 



We have with us the white-pine blister rust, undoubtedly a 

 European importation. Within the year the number and range of 

 infected areas has been reported as largely increased, in spite of 

 vigorous and early measures toward its control. In view of our 

 experience with the chestnut-blight, and considering the method of 

 fungus propagation and spore distribution, would a well-informed 

 forester care to prophesy the eradication of the disease in America, 

 cur ability to keep it restricted, or our ability to prevent reinfection 

 by accidental (or otherwise) importation? Would one even care to 

 estimate the probable rate of its spread? If these are doubtful matters, 

 what as to the economic future of white pine? In parts of Europe 

 it has been given up as hopeless. 



Within the last two years, certain Lake States plantations of white 

 pine have been seriously attacked by a species of saw-fly, which 



