REPORT OF THE SECRETARY IX 
FREER GALLERY OF ART 
Director.—A. G. WENLEY. 
Assistant Director.—Grack DUNHAM GUEST. 
Associate in research.—J,. A. POPE. 
Associate in Near Eastern art —RIcHARD ETTINGHAUSEN. 
BUREAU OF AMERICAN ETHNOLOGY 
Chief.—MATTHEW W. STIRLING. 
Assistant Chief.—FrANK H. H. Roperts, Jr. 
Senior ethnologists.—H. B. Cottins, Jr., Joan P. HArrinetron, W. N. FENTON. 
Senior anthropologists.—H. G. BARNETT, G. R. WILLEY. 
Collaborator.—JOHN R. SWANTON. 
Editor.—M. HELEN PALMER. 
Librarian.—MiriamM B. KetcHumM. 
Tllustrator.—Epwin G. CASSEDY. 
INSTITUTE oF SocrAL ANTHROPOLOGY.—JULIAN H. SrewakRp, Director. 
INTERNATIONAL EXCHANGE SERVICE 
Acting Chief —Harry W. Dorsey. 
Acting Chief Clerk.—D. G. WILLIAMS, 
NATIONAL ZOOLOGICAL PARK 
Director.—WILLIAM M. MANN. 
Assistant Director.—ERNEST P. WALKER. 
Head Keeper.—F rank O. Lowe. 
ASTROPHYSICAL OBSERVATORY 
Director.—LoyauL B. ALDRICH. 
DivISION of ASTROPHYSICAL RESEARCH : Loyal B. Aldrich, in charge; William H. 
Hoover, senior astrophysicist; Charles G. Abbot, research associate. 
DivIsION OF RADIATION AND ORGANISMS: Earl 8. Johnston, assistant director ; 
Leland B. Clark, engineer (precision instruments) ; Robert L. Weintraub, as- 
sociate biochemist ; Leonard Price, junior physicist (biophysics). 
