INDEX TO VOLUME 32 



Page 



A BIBLIOGRAPHY of economic geoloay ; 



I). P. Hewett 158 



AcL'oRDAXT levels in the White Moun- 

 tains ; A. C. Lane o'ii 



Additional notes on the zonal distribu- 

 tion of differing ores, outwardly 

 from an igneous source ; J. F. Kemp 158 



Adirondack magnetite deposits, Origin 



of 63 



Affiliation with the Society of Eco- 

 nomic Geologists 43 



Age of the Andes ; E. W. Berry and 



J. T. Singewald, .Tr 39 



— determination of faunas ; E. O. Ul- 



rich : 132 



Alaska. Notes on Kennecott glacier of. 52 

 A LATE Pleistocene readvauce of the ice- 

 sheets in the Vancouver region, 

 British Columbia ; W. A. Johnston . 51 

 Albany River, Ontario, Sti-atigraphy of 39 

 Alcock, F. J., and E. L. Bruce ; Pre- 



Camhrian rocks of Manitoba . . . 40, 267 

 AllEiMONTITE from British ("oluml)ia; 

 >Skutterndite from Colialt. Ontario ; 



T. L. Walker 165 



A.mexdment to Constitution of I'aleou- 



tological Society 125 



A.mendjient.s to Constitution and By- 

 Laws 13 



Ajhoricax species of the genus Schwa- 

 gerina and their stratigraphic sig- 

 nificance ; J. W. Beebe 127 



An addition to the marine mammalian 

 fauna of Newport, Oregon ; E. \j. 



I'ackard 148 



Analyses of rocks from Sweet Grass 



Hills, Montana 448, 457 



Nevada cave limestone 69 



Anatomy of Middle Cambrian Crustacea ; 



C. D. Walcott 127 



Ancient rock deformations and their 

 present expressions in western Ver- 

 mont ; C. E. Gordon 88 



Andes, Age of the 39 



Animikite from Silver Islet, Lake Su- 

 perior 165 



Annual dinner 68 



An objection to the contraction hy- 

 pothesis as accounting for moun- 

 tains ; F. B. Taylor 33 



An oeigin of crystalline schists ; C. R. 



Keyes 34 



Antilles. Fault troughs of the 47 



Araucarioxylox in the Cretaceous.... 135 

 Arbuckle region, Glaciation of the.... 91 

 Arci'atk mountain structure 31 



— mountains. Evolution of 30 



ARCTOTHEuir-M, Skeleton of the cave 



bear 147 



Arkaxsas, Diamonds of Pike County... 165 

 Ashley, G. H. : McKeesport : A study in 



political and economic geology.... 158 

 A significant petrographic unconform- 

 ity ; C. P. Berkey 58 



Association of glauconite with uncon- 

 formities ; M. L Goldman 25 



A STUDY of the fauna and stratigraphy 

 of the Briones formation of middle 

 California : P. TX Trask 145 



XXXIV — Bull. Geol. Soc. Am., Vol. 



Page 

 Atlantic regions. Crustal deformation 



in 32 



Atwood, W. 'W. ; Final stages in the 



physiographic evolution of the San 



Juan Mountains 70 



Auditing Committee of the Paleontolog- 



ical Society 124, 134 



, Report of the 42, 43 



, Election of 12 



AuGiTE from Vesuvius and Etna 164 



Bayley, W. S. : aiagiietites of North 



Carolina — their origin 64 



Bateman, a. M. ; Notes on the Kenne- 

 cott glacier, Alaska 52 



Bastin, E. S., Notes on the origin of the 



silver ores of the Comstock lode. . 158 



Basslek, R. S., Secretary : Proceedings 

 of the Twelfth Annual Meeting of 

 the Paleontological Society, held at 

 Chicago, Illinois, December 28-30, 

 1920 119 



— ; Paleontological exhibits at the U. S. 



National Museum 126 



Beartooth Mountains, Montana, Geo- 

 logic features of 29 



Beebe, J. W. ; American species of the 

 •genus Schwagerina and their strati- 

 graphic significance 127 



Berkey, C. P. ; A significant petro- 

 graphic unconformity 58 



— ; True sphere of petrology 72 



Berry, E. W.. and J. T. Singewald, 



Jr. ; Geologic history of the Coro- 



coro copper district, Bolivia 66 



; Age of the Andes 39 



Bevan, Arthur : Some geologic features 

 of the Beartooth Mountains, Mon- 

 tana 29 



Bibliography of economic geology.... 158 

 Billingsley. p., and J. F. Kemp; 



Sweet Grass Hills. Montana 437 



Black Hills of South Dakota. Pre-Cam- 



brian unconformity in the 37 



Bolivia, Corocoro copper district of . . . 66 

 Branxer, John C. ; Memorial of Joa- 



quim Candido da Costa Sena 16 



Branson, E. B. ; Devonian of Missouri. 35 

 Bretz, J. H. ; Stratigraphic problems in 

 the Columbia Valley between Snake 



River and Willamette River 36 



Briones formation of middle California 145 

 British Colu.mbia, Allemontite from.. 165 



, Orthoclase from 165 



. — , Pleistocene readvance of ice-sheets 



in the Vancouver region of 51 



.Sedimentation of Eraser River in 52 



Brock, R. W. ; Geological notes on Pal- 

 estine ''^^ 



— ; Geology of Palestine 146 



Brooks. A. IT. ; Publications dealing 



with North American geology and 



geography -■!•"' 



Brown, B„ Jurassic fishes collected by. 136 

 Brown, T. C. : Flooding of oil wells by 



fresh water 67 



Bruce, E. L., and F. J. Alcock ; Pre- 



Cambrian rocks of Manitoba . . . 40. 267 



32, 1920 (479) 



