728 A NATIONAL PLAN FOR AMERICAN FORESTRY 



A series of tests are under way with certain oils and chemicals which 

 will penetrate the outer bark of infested pines and kill the bark beetle 

 broods. If a cheap material can be developed it will do away with 

 the labor of peeling infested trees and subsequent burning of the 

 bark two phases of the methods now in use which add considerable 

 to the expense and fire hazard of control projects. Several materials 

 have been tried which promise to be quite effective in producing a 

 kill if applied during the earlier stages of brood development. If the 

 technique of application can be satisfactorily worked out and the cost 

 of materials kept within reason, these experiments should represent a 

 real contribution toward more effective methods and lower control 

 costs. 



COOPERATION BETWEEN THE BUREAU OF ENTOMOL- 

 OGY AND OTHER FEDERAL AGENCIES IN INSECT 

 CONTROL 



It has already been pointed out that forest insect control involves 

 many technicalities based on an intimate knowledge of the habits of 

 the specific insect causing the damage. It likewise involves a detailed 

 knowledge of the topography of the lands under control as well as 

 close contacts with local labor and transportation facilities, which 

 information is only available to the administrative officers on the 

 ground. Due to this combined requirement for technical, entomolog- 

 ical, and administrative knowledge, cooperation has been a necessary 

 essential in all past control work. 



The responsibility for the investigation of insects affecting forests 

 or, in other words, the discovery of the biological facts on which 

 control rests has been invested by law in the Bureau of Entomology. 

 This law further provides for the cooperation of the Bureau of Ento- 

 mology with other Federal agencies charged with the protection of 

 Government lands and with private timberland owners. Briefly, 

 the instructions state that the Bureau of Entomology shall be respon- 

 sible for conducting surveys and for giving specific recommendations 

 for control at the request of other Federal agencies and for the assign- 

 ment of an entomologist to the project during the period of control 

 when conditions warrant. In actual practice the spirit of coopera- 

 tion has exceeded the letter of the law. The Forest Service and 

 National Park Service, as well as private owners, have aided the 

 Bureau of Entomology by supplying field expenses or part of the 

 salaries of entomologists engaged in control and the Bureau of Ento- 

 mology has, from time to time, particularly in the case of the National 

 Park Service, assumed more than its share of administrative duties. 

 The chief handicap to the more successful conduct of such coopera- 

 tion has been the lack of trained personnel in the Bureau of 

 Entomology. 



Another form of cooperation is that involving the joint treatment of 

 intermingled or adjacent lands under different ownership or adminis- 

 trative agency. Insects are no more restricted by ownership boun- 

 daries than is fire, hence the necessity for coordinated suppression 

 efforts. This need has been adequately and harmoniously met in 

 the past by all Federal agencies. There is need of greatly strength- 

 ening this present effort, particularly by making available funds for 

 coordinated attack when emergencies develop and for more adequate 

 entomological supervision, 



