LETTER OF TRANSMITTAL. 



U. S. I)El'ART:MKXr OF A(;Riri"LTI'RE, 



BrREAr OF EXTOMOEOGY, 



Washington, D. G ., January 31, 1907. 

 Sir: I have the honor to transmit herewith a manuscript by 

 Mr. AV. xV. Hooker, special field agent in this Bureau, on the tobacco 

 thrips, an insect which has, during the last two or three years, 

 caused great damage to shade-grown tobacco in Florida, Texas, and 

 Georgia. This paper contains a general account of this thrips, and 

 gives recommendations for applying remedial measures, and I rec- 

 ommend its publication as Bulletin No. 05 of the Bureau of Ento- 

 mology. 



Respectfully, 



I^. O. Howard, 

 EntomoJcxjist and Chief of Bureau. 

 Hon. James AVilson, 



Seeretary of Agriculture. 



