LETTEK 



FROM THE 



ACTING SECEETAKY OF THE SMITHSONIAN INSTITUTION 



SUBMITTING 



THE ANNUAL BEPOBT OF THE BOARD OF REGENTS OF THE 

 INSTITUTION FOR THE YEAR ENDING JUNE 30, 1923 



Smithsonian Institution, 



W as king ton, June 21, 192 If. 

 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 

 ending June 30, 1923. I have the honor to be, 

 Very respectfully, your obedient servant, 



C. G. Abbot, 



Acting Secretary. 



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