EDITORIAL BOARD 
The HoM« Secretary and the Foreign Secretary of the Academy 
The Chairman and the Permanent Secretary of the Nationai, 
Research Councii. 
J. M. Clarke 
A. L. Day 
R. Dodge 
W. DUANE 
G. Dunn 
N. M. Fenneman 
A. D. Flinn 
F. P. Gay 
R. G. Harrison 
L. J. Henderson 
F. R. L11.LIE 
E. H. Moore 
W. J. V. OSTERHOUT 
F. Schlesinger 
E. W. Washburn 
W. M. WheeivEr 
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