Volume XVII | - Number 1 
ee a THE 
Journal of Geology 
A Semi-Quarterly Magazine of Geology and 
| 7 Related Sciences 
FANUARY-FEBRUARY, 1909 
EDITORS 
cis C. CHAMBERLIN, zz General Charge 
_R. D. SALISBURY R. A. F. PENROSE 
Geographic Geology Economic Geology 
J. P. IDDINGS C. R. VAN HISE 
Petrology Structural Geology 
STUART WELLER W. H. HOLMES 
Paleontologic Geology ' : Anthropic Geology 
S. W. WILLISTON, Vertebrate Paleontology / 
Ne ASSOCIATE EDITORS 
SIR ARCHIBALD GEIKIE ~G. K. GILBERT 
Great Britain Washington, D. C. 
; H. -ROSENBUSCH H. S. WILLIAMS 
Germany Cornell University 
Ne CHARLES BARROIS Cc. D. WALCOTT : 
~- france Smithsonian Institution 
- ALBRECHT PENCK Ju C. BRANNER 
: Germany. Stanfora University 
_ ‘HANS REUSCH W. B. CLARK | 
Norway Johns Hopkins University 
Gk "RARD DE GEER _ 4 O. A. DERBY , 
: Sweden Brazil 
> ie Ww. E. DAVID WILLIAM H. HOBBS . 
hos Australia University of Michigan 
Che Anibersity of Chicago Press 
CHICAGO AND NEW YORK < 
Writiam Westey & Son, LonpoNn 
