REPORT 



OF THK 



SECRETARY OF THE SMITHSONIAN 



INSTITUTION 



C. G. Abbot 



FOR THE YEAR ENDING JUNE 30, 1930 



To the Board of Regents of the Smithsonian Institution: 



Gextlemex : I have the honor to submit herewith my report show- 

 ing the activities and condition of the Smithsonian Institution and 

 the Government bureaus under its administrative charge during the 

 fiscal year ended June 30. 1930. The first 24 pages contain a summary 

 account of the affairs of the Institution. Appendixes 1 to 11 give 

 more detailed reports of the operations of the United States National 

 Museum, the National Gallery of Art, the Freer Gallery of Art, the 

 Bureau of American Ethnology, the International Exchanges, the 

 National Zoological Park, the Astrophysical Observatory, the Divi- 

 sion of Radiation and Organisms, the United States Regional Bureau 

 of the International Catalogue of Scientific Literature, the Smith- 

 sonian library, and of the publications issued under the direction of 

 the Institution: and Appendix 12 contains a list of subscribers since 

 November 15, 1929, to the James Smithson Memorial Edition of the 

 Smithsonian Scientific Series. 



THE SMITHSONIAN INSTITUTION 



OUTSTANDING EVENTS OF THE YEAR 



Several events of unusual importance to the Institution have oc- 

 curred during the year just passed, and its scientific work has pro- 

 gressed in a satisfactory manner. To mention some of the high-lights 

 of the year's advance. Congress authorized an appropriation for the 

 construction of the much-needed wings on the Natural History 

 Building of the National Museum at a cost not to exceed $G,500,000. 

 The work of the Astrophysical Observatory has shown an apparently 

 large and important influence of small short-period solar variations 

 on the temperature in the United States. The new Division of Radia- 



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