THE AMERICAN PHYSICAL SOCIETY 
GEOPHYSICS 
1931 
PAPERS PRESENTED BEFORE THE SOCIETY OF 
PETROLEUM GEOPHYSICISTS AT THE JOINT 
SESSION WITH THE AMERICAN PHYSICAL 
SOCIETY AT NEW ORLEANS, DECEMBER 
29 AND 30, 1931 
TRANSACTIONS 
SOCIETY OF PETROLEUM GEOPHYSICISTS 
VOL. II 
Reprinted from PHYSICS 
MARCH 1932 
141 
