INDEX TO VOLUME 31 



Page 

 iDAMS. L. H. : Constitution of the 



earth's interior Ill 



Aktoxian gravels of Iowa 132 



Age of the Ellensburg formation of 



eastern Oregon : J. C. Merriam. . . . 185 



scarp-producing faults of the 



Great Basin: G. D. Louderback . . . 127 



Al\ska. Eruption of 1012 in 140 



— , Glacial erosion in 132 



— . Ore deposits of Kennecott 157 



American- paleontologists and the im- 

 mediate future of paleontology ; C. 



Schuchert 150, 363 



Anntal dinner 148 



1015. of Cordilleran Section 181 



AxoRTHosiTE-GABHRd in northern New 



York : W. T. Miller 140 



An'ticosti section. Revision of the. . . . 209 

 Appalachiax oil and gas fields. Deep 



drilling in the 157 



Arctotherilm from Texas, New speci- 

 men of 224 



Argillites of the till 125 



Arxold. R. : Oil geology in relation to 



valuation 433 



Arraxgemexts for additional geolog- 

 ical surveys in the West Indies ; 



T. W. Vaughan 139 



Atlaxtic plain. Shifts of land at sea- 

 level in 113 



AfDiTiXG Committee, Election of 11 



of the Paleontolpgical Society... 201 



, Report of the 209 



, Report of the 123 



Barrell, .T., Memorial address on 203 



Barrows. A. L. ; Recent extension of 

 the distribution of marine wood 

 borers in San Pablo Bay 186 



Ba.ssi.er. R. S.. Memorial address on 



V. W. Lyon by 203 



— , Secretary ; Proceedings of the Elev- 

 enth Annual Meeting of the Pnle- 

 ontological Society, held at Boston, 

 Massachusetts, December 30 - 31, 

 1910 197 



— ; Study of the life processes in fos- 

 sils 222 



Bastix. E. S., Discussion of ore de- 

 posits by 180 



Batemax. a. M. : Geologj- of the ore 



deposits of Kennecott. Alaska 157 



"BEACir rock" fcoquina) at Loggerhead 



Key, Tortugas 215 



Bear, New specimen of Pleistocene. . . . 224 



Bearixg of experimental chemical data 

 on the formation of smithsonite ; 

 T. L. Watson 161 



Becker, G. P., Bibliography of 19 



— , Memorial of 14 



Bexsox, W. N. ; Tectonic conditions nc- 

 companying intrusion of basic and 

 ultra-basic igneous rocks 144 



Berry. E. W. ; The teaching of paleo- 

 botany 158, 213. 389 



Big Bkxd country. Glacial history of 



Columbia River in 1,31 



BinMOGRAPHTC studies of the Cambrian ; 



C. E. Resser 213 



BiLLiXG.SEv. P.. and .1. P. Ke.mp ; Sweet 



Grass Hills. Montana 158 



Black Hills, Oil possibilities along 



southern margin of 195 



XXXI— Bull. Geol. Soc, Am., Vol. 31 



Page 



BoLsoxs, Some physiographic features 



of 179 



BosTOX. Paleontological collection in 



the vicinity of 204 



BowEX, N. L. ; Differentiation by def- 

 ormation 139 



Breccias of the Mariposa formation in 

 the vicinity of Colfax, California ; 

 E. F. Davis 190 



Brooks, A. H. ; Use of geology on the 



western front 153 



Browx, C. W., Discussion of beaches 



by 113 



— ; Field experiment in isostasy 114 



— ; Post-glacial river changes in Rhode 



Island and continental tilt 114 



Bryan, K. ; Mountain pediments : A dis- 

 cussion of the erosion of desert 



ranges 152 



BuELL, , Discussion of California 



and Oregon stratigraphy by 192 



— , Discussion of tilting by 193 



Buwalda. .7. P. : Fault system of the 

 southern end of the Sierra Nevada. 



California 127 



— ; Oligocene Equidae in the Marsh col- 

 lection 224 



— ; Structure of the southern Sierra 



Nevada 183 



— ; The value of terrestrial organisms 



in the interpretation of sediments. 123 

 Byram marl, Foraminiferal fauna of 



the 215 



Calcixatiox volcanoes; W. H. Hobbs. 115 

 California, Breccias of the Mariposa 



formation of 190 



— , Copper belt of the Sierra Nevada of. 189 



— during Lower Eocene time. Climatic 



zones in 185 



— , Fault system of the Sierra Nevada. 127 

 — , Geology and mineral resources of 



Inyo County 189 



of a portion of the Santa Ynez 



River district 182 



— . Meganos group of 232 



— , Miocene fishes of 195 



— , Occurrence of manganese In 189 



— , Radiolarian cherts of the Francis- 

 can group of 190 



— . Structure of the coast ranges of . . . 193 

 Calloidal migration in ore deposits. . . 180 

 Cambrian, Bibliographic studies of the. 213 



— formations and faunas of the upper 



Mississippi Valley; E. O. Tllrich.. 214 



— of Newfoundland and Great Britain. 214 



— , Sponges of the Middle 222 



Carboniferous salt and potash deposits 



of eastern Canada ; A. O. Hayes. . . 155 



Caryocrixites, Appearance of addi- 

 tional iirms in ; 220 



Catskill Mountains. Stream develop- 

 ment and glaciation in the 152 



Caxada, Carboniferous salt and potash 



deposits of 155 



--, Pleistocene changes of level in Mani- 

 toba LSI 



Cascade Mountains and Puget Sound 



Baffin. Cross-section of 189 



Cexozoic formations of the Great Basin 133 



— history of the ground sloth group ; 



C. Stock 194, 232 



1919 (441) 



