488 



BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



Vermont, Rock deformations in west- 

 ern 88 



Vesuvius. Augite from 164 



ViSHER, S. S. ; Increased oceanic salin- 

 ity as one cause of increased cli- 

 matic contrasts 429 



ViSHER, Stee^hen ; Structural features 



of Indiana 27 



VoLCANOLOGY of the Hawaiian Islands ; 



H. S. Washington 72 



Von Schlichten, Otto ; Simple method 

 of determining refractive indices of 

 liquids with the microscope 165 



Walcott, C. D. ; Anatomy of Middle 



Cambrian Crustacea 127 



Walker, T. L. ; Allemontite from Brit- 

 ish Columbia ; sliutterndite from 

 Cobalt, Ontario 165 



— ; Crystal habit of orthoclase from 



Penticton, British Columbia 165 



— ■ ; Occurrence of cosalite in Ontario. . . 165 



Walter, 0. T. ; Upper Cambrian trilo- 



bites 128 



Washington, H. S., and A. B. Mbrwin ; 



Aphthitalite from Kilauea 164 



; Note on augite from Vesuvius 



and Etna 164 



— ; Rocks of Kohala and Kea, Hawaii . . 58 



— ; Some suggestions as to general min- 



eral characters 164 



— ; Volcanology of the Hawaiian Islands 72 

 Weidman. S. ; Probability of Pennsyl- 



vanian glaciation of the Arbuckle 



and Wichita Mountain regions.... 91 

 Wells, R, C. ; Chemical and physical 



researches on sedimentation 23 



Wentworth, C. K. ; Field study of the 



shapes of river pebbles 89 



„, Page 



Wentwortii, C. K. ; Method of measur- 

 ing and plotting the shapes of peb- 

 bles 89 



West coast. Marine Tertiary deposits 



of 90, 147 



Wherry, E. T,, and W. F. Foshag ; Hy- 

 drous talcs 165 



— ; Notes on isomorphism 165 



— ; Signilicance of crystal habit 165 



White, I. C. ; Important epochs in the 



history of petroleum and natural 



gas 42, 171 



White Mountains, Accordant levels in. . 53 

 Whitlock, H. p.. Secretary; Proceed- 

 ings of the First Annual Meeting 

 of the Mineralogical Society of 

 America, held at Chicago, Illinois, 



December 29, 1920 163 



Wichita Mountain region, Glaciation of 



the 91 



Wilder, F. A. ; Some conclusions in re- 

 gard to the origin of gypsum ... 67, 385 

 Williams, M. Y. ; Stratigraphy of the 

 Moose and Albajiy rivers of north- 

 ern Ontario 39 



Windrow formation, Age of the 307 



: an upland gravel formation of 



the driftless and adjacent areas of 

 the upper Mississippi Valley ; F. T. 



Thwaites and W. H. Twenhofel 293 



, Origin of the 304 



Wisconsin moraine 86 



— , Windrow formation of 296 



Wright, G. F. ; Origin and distribution 



of the loess 48 



Zonal distribution of differing ores..., 158 

 Zone of flow doctrine challenged 32 



