REPORT OF THE SECRETARY Xni 



BUREAU OF AMERICAN ETHNOLOGY 



Chief. — Matthew W. Stirling. 



Senior ethnologists. — H. B. Colons, Jk., John P. Habeington, John R. 



SWANTON. 



Senior archeologist. — Fbank H. H. Roberts, Jb. 

 Senior anthropologist. — Julian H. Steward. 

 Associate anthropologist. — W. N. Fenton. 

 Editor. — M. Helen Palmeb. 

 Librarian. — Miriam B. Ketchum. 

 Illustrator. — Edwin G. Cassedy. 



INTERNATIONAL EXCHANGES 



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

 Chief Clerk. — Coates W. Shoemaker. 



NATIONAL ZOOLOGICAL PARK 



Director. — William M. Mann. 

 Assistant director. — Ernest P. Walker. 



ASTROPHTSICAL OBSERVATORY 



Director. — Charles G. Abbot. 

 Assistant director. — Loyal B. Aldkich. 

 Senior astrophysicist. — William H. Hoover. 



DIVISION OF RADIATION AND ORGANISMS 



Director. — Charles G. Abbot. 

 Assistant director. — Earl S. Johnston. 

 Senior physicist. — Edward D. McAoster. 

 Senior mechanical engineer. — Leland B. Clark. 

 Associate plant physiologist. — Florence M. Chase. 

 Junior biochemist. — Robebt L. Weintraub. 



