LETTER 
OF THE 
SECRETARY OF THE SMITHSONIAN INSTITUTION, 
COMMUNICATING 
THE ANNUAL REPORT OF THE OPERATIONS, EXPENDITURES, AND CON- 
DITION OF THE INSTITUTION FOR THE YEAR 1864. 
SMITHSONIAN INSTITUTION, 
ayy Washington, March 1, 1865. 
In behalf of the Board of Regents, I have the honor to submit 
to the Congress of the United States the annual report of the opera- 
tions, expenditures, and condition of the Smithsonian Institution for 
the year 1864. 
I have the honor to be, very respectfully, your obedient servant, 
JOSEPH HENRY, 
Secretary Smithsonian Institution. 
Hon. H. Hamu, 
President of the Senate. 
Hon. 8. CoLrax, 
Speaker of the House of Representatives. 
