REPORT 



OF 



S. p. LANGLEY, 



SECRETARY OF THE SMITHSONIAN INSTITUTION, 



FOR THE 



YEAR ENDING JUNE 30, 1905. 



To the Board of Regents of the Smithsonian Institution. 



Gentlemen : I have the honor to present herewith my report, 

 showing the operations of the Institution during the year ending 

 June 30, 1905, including the Avork placed under its direction bj^ Con- 

 gress in the United States National Museum, the Bureau of American 

 Ethnolog}^, the International Exchanges, the National Zoological 

 Park, and the Astroph}sical Observatory. 



Following the precedent of several years, there is given, in the 

 body of this report, a general account of the affairs of the Institution 

 and its bureaus, while the Api^endix presents more detailed state- 

 ments by the persons in direct charge of the different brandies of 

 the work. Independently of this, the operations of the National 

 Museum are fully treated in a separate volume of the Smithsonian 

 Report, and the Report of the Bu.reau of American Ethnology con- 

 stitutes a volume prepared under the supervision of the Chief of 

 that Bureau. The scientific work of the Astrophysical Observatory 

 is recorded in occasional publications. 



THE SMITHSONIAN INSTITUTION. 



TIIK KSTAIU.ISII .M KNT. 



By act of Congress approved August 10, 181(5, the Smithsonian 

 Institution was created an Establishment. Its statutory members are 

 the President, the Vice-President, the Chief Justice of the United 

 States, and the heads of the Executive Departments. The preroga- 

 tive of the Establishment is " the supervision of the affairs of the 



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