LETTER OF TRANSMITTAL. 
U. S. DEPARTMENT OF AGRICULTURE, 
November 20, 1891. 
Str: I have the honor of herewith presenting for publication the 
first number of the ‘‘Gragses of the United States and British America.” 
Respectfully, 
GEORGE VASEY, 
Botanist. 
Hon. J. M. Rusk, 
Secretary. 
HI 
