842 INDEX TO VOLUME XV 
Wilcox, Oswin W. The Viscous vs. the Granular Theory of Glacial Motion. 
Review by T. C. C. : : 
Wilder, F. A. Iowa Geological Survey: Rewer by Cc: W. W. : 
Williams, Henry S. The Devonian Section of Ithaca, New York. Part II. 
Discrimination of the Nunda-Chemung Boundary 
Willis, Bailey. Reports on Geological Investigations. Review oF C. W. W. 
Wilson, Alfred W. G. Trent River System and St. Lawrence Outlet. 
Review by C. W. W. 
Witwatersrand Gold Region, Prana South Apeas as Seen 4 in Recent 
Mining Developments. R. A. F. Penrose Jr. 
PAGE 
188 
631 
93 
597 
603 
735 
