November- December 1918 as fe No 
THE JOURNAL. OF GEOLOGY 
EDITED. BY 
THOMAS C. CHAMBERLIN AND ROLLIN-D. SALISBURY 
With the Active Collaboration of 
*SAMUEL W. WILLISTON ; ALBERT JOHANNSEN | 
Vertebrate Paleontology Petrology 
STUART WELLER AOE T. CHAMBERLIN 
Invertebrate Paleontology Dynamic Geology 
ALBERT D. BROKAW : 
*Deceased. Economic Geology 
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