50 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. ^ 



marked trees on the adjoining estate and National Forest had l)een 

 cut and barked. In November, 1908. Mr. Edmonston was instructed 

 to make another inspection of the forest on the estate and surround- 

 ing area, and on December 1 he reported: "Nothing could be more 

 satisfactory than the results obtained by the cutting of the infested 

 timber on the estate. Your recommendations and instructions sub- 

 mitted to the owner, and carefully followed by the manager of the 

 estate, have clearly demonstrated that insect infestation can be con- 

 trolled and at no expense to the owner of the timber involved, in fact 

 a very satisfactory price was realized, resulting in a net profit, I 

 understand, of $5 per thousand feet, board measure, on the 240.000 

 feet cut. This, of course, does not include the profit of the milling 

 operations, but for the logs sold at the mill, after deducting the ex- 

 penses of cutting and logging. The sawmill was owned and operated 

 by an Idaho Springs firm, and the manufactured article sold in that 

 town. I spent six days on the estate. November 18th to 23d. After 

 a very thorough examination of the timber, I found only three in- 

 fested trees, isolated individuals, and over a mile from where the 

 laj^'ge clumps of infested trees were cut. With the exception of those 

 three trees, there is no new infestation on the estate. I also exam- 

 ined the adjoining lands, but no new infestation was observed. The 

 infested trees which I marked in December, 1907, had all been cut 

 and barked. On the Pike National Forest, contiguous to the first 

 mentioned estate, where you will remember I marked some clumps 

 of infested trees, no new infestation was found, not one tree. I 

 found that all the infested trees had been cut and barked. Ranger 

 Kelso had charge of this work, and it has been quite thoroughly 

 done. ' ' 



This most gratifying result demonstrated two important things : 

 one, that a quite extensive outbreak by one of the Dendroetonus bee- 

 tles involving more than 1,000 trees can be controlled without expense, 

 and even at a profit, whenever the conditions are favorable for the 

 utilization of the infested timber ; the other, that the essential de- 

 tails of the recommendations and expert advice based on the results 

 of scientific research can be successfully applied by a manager of 

 a private forest and the rangers of national and state forests. It 

 also indicates quite conclusively that the widespread depredations 

 in the Black Hills Forest Reserve could have been prevented with 

 very little expense to the government if the matter had received 

 prompt attention in 1901, when the first investigations were made and 

 e-ssentially the same recommendations submitted. But, through the 

 lack of public appreciation of the importance of the problem at the 



