CONTENTS. -"^^^«' 



Page. 



Staff of Museum 7 



Inception and history 9 



Operations of the year 15 



Appropriations 15 



Buildings and equipment 16 



Collections 18 



Freer collections 19 



Loeb collection of chemical types 20 



Cooperation of the executive departments 20 



Partello bequest 20 



Visitors . 21 



Publications 23 



Library : 23 



Photographic laboratory 24 



Meetings and congresses 24 



Organization and staff 32 



Necrology 34 



Reports on the collections : "39 



Department of biology, by Leonhard Stejneger, head curator 47 



Department of geology, by George P. Merrill, head curator 81 



Department of arts and industries, W. deC. Ravenel, director : 



Textiles, medicine, woods, and foods, by F. L. Lewton 97 



Mechanical technology, by Carl W. Mitman 115 



Mineral technology, by Carl W. Mitman 121 



Graphic arts, by R. P. Tolmau 123 



Division of history, by T. T. Belote, curator 131 



List of accessions 143 



List of publications 199 



<^J 



ILLUSTRATIONS. 



South front of Natural History Building of the Museum Facing title 



Slieleton of smallest horned dinosaur, Brachyceratops montanensis, from 

 Montana. Collected in 1913; mounted during 1920 and 1921. Facing 



page 90 



Skeleton of an extinct bear from a Pleistocene Cave deposit near Cumber- 

 land, Md. Collected in 1915 ; mounted during 1920 and 1921. Facing 

 page 



5 



90 



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