Volume XIII 



Number 2 



THE 



Journal of Geology 



A Semi- Quarterly flagazine of Geology and 

 Related Sciences 



FEBRUARY-MARCH, 1905 



EDITORS 



T. C. CHAM BERLIN, in General Charge 



R. D. SALISBURY R. A. F. PENROSE, Jr. 



Geographic Geology Economic Geology 



J. P. IDDINGS C. R. VAN HISE 



Petrology t Structural Geology 



STUART WELLER W. H. HOLMES 



Paleontologic Geology Anthropic Geology 



S. W. WILLISTON, Vertebrate Paleontology 



&§z SJnibersitg n f 4tf)icago press 



CHICAGO AND NEW YORK 



William Wesley & Son, London 



