CONTENTS 



Page 



List of officials v 



General statement 1 



The Establishment 3 



The Board of Regents 3 



Finances 5 



Appropriations 5 



Visitors 6 



Seventeenth annual James Arthur lecture on the sun 6 



Summary of the year's activities of the branches of the Institution 6 



Publications 11 



Library 12 



Appendix 1. Report on the United States National Museum 13 



2. Report on the National Gallery of Art 23 



3. Report on the National Collection of Fine Arts 36 



4. Report on the Freer Gallery of Art 42 



5. Report on the Bureau of American Ethnology 48 



6. Report on the International Exchange Service 73 



7. Report on the National Zoological Park 82 



8. Report on the Astrophysical Observatory 116 



9. Report on the National Air Museum 122 



10. Report on the Canal Zone Biological Area 133 



11. Report on the library 145 



12. Report on publications 149 



Report of the executive committee of the Board of Regents 156 



GENERAL APPENDIX 



Beyond the Milky Way, by Thornton Page 165 



The luminous surface and atmosphere of the sun, by Bertil Lindblad 173 



What is an elementary particle? by E. Schrodinger 183 



The composition of our universe, by Harrison Brown 197 



The Wright Brothers as aeronautical engineers, by M. P. Baker 209 



Chemical achievement and hope for the future, by Linus C. Pauling 225 



Electroencephalography, by W. Grey Walter 243 



Energy from fossil fuels, by M. King Hubbert 255 



Permafrost, by Robert F. Black 273 



Earthquakes in North America, by B . Gutenberg 303 



Wolf Creek meteorite crater, Western Australia, by D. J. Guppy and R. S. 



Matheson 317 



Natural history in Iceland, by Julian Huxley 327 



Praying mantids of the United States, native and introduced, by Ashley 



B. Gurney 339 



Man's disorder of nature's design in the Great Plains, by F. W. Albertson 363 



m 



