CONTENTS 



Page 



List of officials v 



General statement 1 



The Establishment 4 



The Board of Regents 4 



Finances 5 



Appropriations 5 



Visitors " 



Nineteenth annual James Arthur lecture on the sun 7 



Hall of naval history 7 



Policing of Smithsonian buildings 7 



Mary Vaux Walcott fund for publications in botany 8 



Summary of the year's activities of the branches of the Institution 8 



Publications 



Library 13 



Appendix 1. Report on the United States National Museum 14 



2. Report on the National Gallery of Art 26 



3. Report on the National Collection of Fine Arts 41 



4. Report on the Freer Gallery of Art 48 



5. Report on the Bureau of American Ethnology 56 



6. Report on the International Exchange Service 86 



7. Report on the National Zoological Park 94 



8. Report on the Astrophysical Observatory 130 



9. Report on the National Air Museum 136 



10. Report on the Canal Zone Biological Area 150 



11. Report on the library 158 



12. Report on publications 162 



Report of the executive committee of the Board of Regents 1 69 



GENERAL APPENDIX 



Radio astronomy, by J. A. Ratcliffe 179 



The sun, the moon, and the tides, by Leo Otis Colbert 185 



Engineering and pure science, by W. F. G. Swann 201 



Man's synthetic future, by Roger Adams 217 



Phosphorus and life, by D. P. Hopkins 233 



The Ice Age in the North American Arctic, by Richard Foster Flint 243 



ni 



