LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Bureau or Plant Industry, 



Office of the Chief, 

 Washington^ D. C, September 25, 1906. 

 Sir : I have the honor to transmit herewith a paper on " Tobacco 

 Breeding," by Messrs. A. D. Shamel and W. W. Cobey, of the Plant 

 Breeding Investigations of this Bureau, and would recommend 

 its publication as Bulletin No. 96 of the Bureau series. 



The tobacco-breeding work of the Bureau of Plant Industry has 

 now been under way for several years, and results have been obtained 

 which have attracted widespread attention and proved of very 

 great value to practical tobacco growers. This bulletin is intended 

 to summarize the results secured up to date and to place the 

 knowledge obtained before growers in such a form that they will 

 be able to understand it and apply it in the practical work of im- 

 proving their crops. The experiments have shown that tobacco can 

 be improved in many important ways, and the methods by which 

 such improvements can be produced are here described in detail. 

 The illustrations form a very important part of the publication 

 and are necessary to enable the grower to understand clearly the 

 character and improvements discussed in the text of the bulletin. 

 Respectfully, 



B. T. Galloway, 



Chief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



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