Nri 



THE 



JOURNAL OF GEOLOGY 



A Semi-Quarterly Magazine of Geology and 

 Related Sciences. 



Editors 



T. C. CHAMBERLIN 

 R. D. SALISBURY C. R. VAN HISE 



Geographic Geology Pre-Cambrian Geology 



J. P. IDDINGS C. D. WALCOTT 



Petrology Palceontologic Geology 



J^. A. F. PENROSE, Jr. W. H. HOLMES 



Economic Geology Archceologic Geology 



GEORGE BAUR 



Vertebrate Palceontology 



Associate Editors 



SI ARCHIBALD GEIKIE 



Great Britain 

 H. .lOSENBUSCH 



Gei'inany 

 CHARLES BARROIS 



Fratice 

 ALBRECHT PENCK 



Austria 

 HANS REUSCH 



Nortvay 

 GERARD DE GEER 



Sweden 

 GEORGE M. DAWSON 



Canada 



JOSEPH LE CONTE 



University of California 

 G. K. GILBERT 



Washington 

 H. S. WILLIAMS 



Yale Uttiversity 

 J. C. BRANNER 



Leland Stanford, Jr. University 

 G. H. WILLIAMS 



Johns Hopkins University 

 I. C. RUSSELL 



University of Michigan 

 O. A. DERBY 



Brazil 



VOLUME II 



1894 



CHICAGO 



