10 INSECT DAMAGE IN THE NATIONAL PARKS. 



bark, as illustrated in the bulletins of the Bureau of Entomology, will 

 be easily recognized. 



The next thing to do is to determine the extent of the infestation, 

 the kind of trees invoh-ed, and the facilities for disposing of the 

 timber by sale, free use, or direct expense. Then the superintendent 

 should report the facts to an expert and ask for advice and recom- 

 mendations. If he will then proceed without delay to dispose of the 

 infestation according to instructions given him, success in checking 

 or completely controlling the pest is almost certain to follow. 



If, upon locating an infested area, it is found to extend beyond the 

 park boundary into adjacent privately owned timber or the national 

 forests, cooperation or at least concerted action is required, because 

 an important center of infestation is a menace to the living timber 

 within a radius of 10 to 20 miles. 



If the timber of a national park is healthy and centers of infesta- 

 tion are found in adjacent forests within a radius of 10 to 20 miles, 

 the park superintendent should notify the owners. If, for any 

 reason, the owners can not dispose of the infestation the park officials 

 should help do it just as they would help in fighting a fire that 

 was threatening the park. In like manner the Federal and private 

 owners of healthy timber adjacent to a park should help dispose of 

 any extensive infestation in the ])ark. because it may be more of a 

 common menace than a forest fire. 



If this policy of cooperation for the general good is adopted and 

 the essential requirements for successful control are strictly adhered to 

 for a few j^ears by the officials of the national parks, the national 

 forests, and the principal private owners, the damage to livhig 

 timber in the parks and on adjacent lands will be reduced to a mini- 

 mum, and ultimately thousands of dollars in commercial and aesthetic 

 values will be saved for every dollar of public or private money 

 expended. 



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