LE'ITHR OF TRANSMHTAL 



U. S. Department t)F Agricultuue, 



BiHEAU OF Entomology, 

 Washington. D. C, May 28, 1906. 

 Sir: I liavo tlie honor to transmit horowith the manuscript of a 

 contribution, by Mr. J. L. \Vel)b. on tlic Western Pine-destroying 

 Barkbeetle. It lias sjx'cial reference to the resuhs of investifj^ations 

 ])y Mr. Webb in central Idaho in 1905, but relates also to the results 

 of other investigations and to available information on the insect and 

 methods of combating it. I recommend its publication as Part II 

 of Bulletin Xo. 58 of this Bureau. The figures and ])lates are neces- 

 sary for the illustration of the text. 

 Respectfully, 



L. O. IIoWAIM), 



Chief of Bureau. 

 J Ion. .I.v.MES Wilson, 



^(.cretanj (f Agriculture. 



