v,t-; 



* 



LETTER OF TRANSMITTAL. 



WASHINGTON, Jime 5, 1890. 



SIR : I have the honor of presenting for publication the manuscript of a Bulletin 

 on the Grasses of the Southwest. 

 Respectfully, 



GEORGE VASEY, 



Botanist. 

 Hon. J. M. RUSK, 



Secretary of Agriculture, 



3 



