LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Bureau of Plant Industry, 



Office of the Chief, 



Washington, D. (?., December 1^, 190^. 

 Sir: I have the honor to transmit herewith, and to recommend for 

 publication as Bulletin No. 74 of the series of this Bureau, the accom- 

 panying manuscript entitled "The Prickly Pear and Other Cacti as 

 Food for Stock." This paper was prepared by Dr. David Griffiths, 

 Assistant Agrostologist in Charge of Range Investigations, and has 

 been submitted by the Agrostologist with a view to its publication. 



The five half-tone plates are necessary to a complete understanding 

 of the text of this bulletin. 



Respectfully, B. T. Galloway, 



Chief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



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