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CONTENTS 



Fuse 



List of officials v 



General statement 1 



The Establishment . 17 



The Board of Regents 17 



Finances 18 



Visitors 18 



Reports of branches of the Institution: 



United States National Museum 20 



Bureau of American Ethnology 48 



Astrophysical Observatory 81 



National Collection of Fine Arts 99 



Freer Gallery of Art 110 



National Air Museum 124 



National Zoological Park 133 



Canal Zone Biological Area 178 



International Exchange Service 183 



National Gallery of Art 192 



Report on the library 205 



Report on publications 209 



Other activities: 



Lectures 218 



Science Information Exchange 218 



Smithsonian Museum Service 219 



Report of the executive committee of the Board of Regents 221 



GENERAL APPENDIX 



Some astronomical aspects of life in the universe, by Su-Shu Huang 239 



X-rays from the sun, by Herbert Friedman 251 



The challenge of space exploration, by Robert C. Seamans, Jr 263 



The Smithsonian's satellite-tracking program: Its history and organization, 



by E. Nelson Hayes 275 



The main lines of mathematics, by J. L. B. Cooper 323 



Early experiments in instrument flying, by James H. Doolittle 337 



Three famous early aero engines, by Robert B. Meyer, Jr 357 



Organic chemistry: a view and a prospect, by Sir Alexander Todd 373 



The new age of the sea, by Philip B. Yeager 381 



Drilling beneath the deep sea, by William E. Benson 397 



A natural history of trilobites, by H. B. Whittington_ 405 



Chromosomes and the theory of heredity, by C. D. Darlington 417 



Tropical climates and biology, by G. S. Carter 429 



Outdoor aerobiology, by P. H. Gregory 445 



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