CONTENTS 



Page. 

 Letter from the Secretary submitting the Annual Report of tlie Regents 



to Congress m 



General subjects of the annual report iv 



Contents of the report v 



List of plates '__ vii 



Officials of the Institution and its branches ix 



REPORT OF THE SECRETARY, 



The Smithsonian Institution 1 



The Establishment 1 



The Board of Regents 1 



Administration 2 



Finances 4 



Explorations and researches : 



Studies in Cambrian geology and paleontology 7 



Aerial navigation 8 



Meteor crater of Canyon Diablo, Arizona 9 



Alaskan expedition 10 



Geology of the Alps 10 



Absolute measurement of sound 11 



Recalculation of atomic weights 11 



Properties of matter at temperature of liquid air 11 



Botanical researches in California 11 



Deep-well temperatures 12 



Investigations under the Hodgkins fund : 



Hodgkins fund prize for essay on tuberculosis 12 



Flow of air at hi^gh pressure through a nozzle 13 



Study of the upper atmosphere 11 



Air sacs of the pigeon 14 



Mechanics of the earth's atmosphere 15 



Smithsonian table at Naples Zoological Station 15 



Publications 17 



Advisory committee on printing and publication 21 



The Library 21 



Preservation of archeological sites 1 22 



Casa Grande ruin in Arizona 23 



Mesa Verde National Park i 23 



Correspondence 24 



Congresses and celebrations 24 



Miscellaneous 26 



National Museum 27 



National Gallery of Art 28 



Bureau of American Ethnology 29 



International Exchanges 30 



National Zoological Park 32 



Astrophysical Observatory 33 



International Catalogue of Scientific Literature 34 



V 



