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LETTER 
FROM THE 
SECRETARY OF THE SMITHSONIAN INSTITUTION, 
SUBMITTING 
THE ANNUAL REPORT OF THE BOARD OF REGENTS OF THE 
INSTITUTION FOR THE YEAR ENDING JUNE 30, 1919. 
Smithsonian Institution, 
Washington, Sepfemhei' 24, 1920. 
To the Congress of the United States: 
In accordance with section 5593 of the Revised Statutes of the 
United States, I have the honor, in behalf of the Board of Regents, 
to submit to Congress the annual report of the operations, expendi- 
tures, and condition of the Smithsonian Institution for the year end- 
ing June 30, 1919. I have the honor to be. 
Very respectfully, your obedient servant, 
W. DE C. Ravenel, 
Acting Secretary. 
