REPORT OF THE SECRETARY XIII 



BUREAU OF AMERICAN ETHNOLOGY 



Chief. — Matthew W. Stirling. 



Senior ethnologists. — H. B. Collins, Jr., John P. Haeeington, John R. 



Swanton. 

 Senior archeologist. — Frank H. H. Roberts, Jr. 

 Senior anthropologist. — Julian H. Steward. 

 Associate anthropologist. — W. N. Fenton. 

 Editor. — M. Helen Palmer. 

 Liibrarian. — Miriam B. Ketchum. 

 Illustrator, — Edwin G. Cassedy. 



INTERNATIONAL EXCHANGE SERVICE 



Secretary (in charge). — Charles G. Abbot. 

 Chief Clerk. — Coates W. Shoemaker. 



NATIONAL ZOOLOGICAL PARK 



Director. — William M. Mann. 

 Assistant Director. — Ernest P. Walkee, 



ASTROPHYSICAL OBSERVATORY 



Director. — Charles G. Abbot. 

 Assistant Director. — Loyal B. Aldrich. 

 Senior astrophysicist. — William H. Hoover. 



DIVISION OF RADIATION AND ORGANISMS 



Director. — Charles G. Abbot. 

 Assistant Director. — Earl S. Johnston. 

 Senior physicist. — Edward D. McAlister. 

 Senior mechanical engineer. — Leland B. Clark. 

 Associate plant physiologist. — Florence M. Chase. 

 Junior iiochemist. — Robert L. Weintraxjb. 



