LETTEE 



OF THE 



SECRETARY OF THE SMITHSONIAN INSTITUTION, 



COMMUNICATING 



THE ANNUAL EEPOET OF THE OPERATIONS, EXPENDITURES, AND CON- 

 DITION OF THE INSTITUTION FOR THE YEAR 1 866. 



May 7, 1SG6. — Laid on the table and ordered to be printed, 



Smithsonian Institution, 



Was/iington, May 7, 1866. 

 Sir : In belialf of tbe Board of Regents, I have the honor to submit to the 

 Congress of the United States, the annual repoi't of the Smithsonian Institution 

 for the year 1 865. 



I have the honor to be, very respectfully, your obedient servant, 



JOSEPH HENRY, 

 Secretary Smithsonian Institution. 

 Hon. Schuyler Colfax, 



Speaker of the Huuse of Representatives. 



