LETTER OF TRANSMITTAL. 
U.S. DEPARTMENT OF AGRICULTURE, 
DIVISION OF BoTany, 
Washington, D. C., February 14, 1896. 
Str: I have the honor to transmit herewith, for publication as Con- 
tributions from the United States National Herbarium, Volume III, 
No. 8, a report entitled “Flora of the Black Hills of South Dakota,” 
by Mr. P. A. Rydberg. This report is based upon a botanical explo- 
ration made in that region by Mr. Rydberg in 1892, as a field agent of 
the Department of Agriculture. 
Respectfully, FREDERICK V. COVILLE, 
Botanist. 
Hon. J. STERLING MortTon, 
Secretary of Agriculture. 
TIl 
