INDEX TO VOLUME XXXI 693 



PAGE 



Dale, Nelson C. Notes on the Areal and Structural Geology of a 

 Portion of the Western Flank of the Green Mountain Range. 



Review by A. C. McF 167 



Dalloni, Marius. La Geologie du Petrole et la Recherche des Gisements 



Petroliferes en Algerie. Book Notice 166 



Davis, W. M. The Cycle of Erosion and the Summit Level of the Alps i 



Deecke, W., Phytopalaontologie und Geologie. Review by A. C. Noe 165 

 Deep Wells in Wisconsin and Northern Illinois, The Paleozoic Rocks 



Found in. By F. T. Thwaites 529 



Denver and Rio Grande Western Route, The. Guide Book of the 

 Western United States, Part E. By Marius R. Campbell. Review 



by R. T. C 160 



de Quervain, Alfred, Mercanton, P. L., and Others. Physiography and 

 Glaciology of Middle West Greenland. Abstract of part of results 

 of Swiss Greenland Expedition. Review by Charles F. Brooks . 436 

 Determinative Mineralogy. By J. Volney Lewis. Review by D. J. F. 86 

 Devonian Floras. By E. A. Newell Arber. Review by A. C. N. . 88 

 Devonian Limestone at St. George, Quebec, The. By Thomas H. Clark 217 

 Dickerson, Roy E. Review of Philippine Paleontology. Book Notice 166 

 Diller, J. S. Did Crater Lake, Oregon, Originate by a Volcanic Sub- 

 sidence or an Explosive Eruption ? 226 



Diluvialen Aufschotterung und Erosion, Die Ursachen der. Von W. 



Soergel. Book Notice 166 



Drift Sheets of Northwestern Illinois, The Differentiation of the. By 



Morris M. Leighton 265 



I 

 Earth Evolution and Its Facial Expression. By William H. Hobbs. 



Review by Eliot Blackwelder 438 



Earth's Magnetic Field, Chief Results of a Preliminary Analysis of the, 



for 1922. By Louis A. Bauer. Abstract 680 



Editorial 152 



Editorial. By R. T. Chamberlin 679 



Eocene of Washington, Fauna from the. By Charles E. Weaver and 



Katherine Van Winkje Palmer. Review by G. Dallas Hanna . 261 

 Essex County, Vermont, A Contribution to the Geology of. By Rolf A. 



Schroeder. Review by A. C. McF 167 



Experiments in Folding, Some. By R. T. Chamberlin and F. P. Shepard 490 



Familien der Reptilien, Die. By Franz Baron Nopcsa. Review by A. S. 



Romer 688 



Faima from the Eocene of Washington. By Charles E. Weaver and 



Katherine Van Winkle Palmer. Review by G. Dallas Hanna . 261 

 Feldspars, The Mineralography of the, Part II. By Harold L. AUing 282, 353 



