INDEX TO VOLUME 3 1 



447 



ri.HisTtu^KNK tim«>. Shifts of land and 

 sea-Ievol in 



Porto Rico. Tertiary formations of. . . . 



roBTS.MorTH Basin. Ooolosiy of the.... 



ros.v.TAK. E.. and II. K. Mkrwin : Tlio 

 ternary system Fe.Og — SO3 — H^C. 



I'osT-OLACiAi. river changes in Rhode 

 Island and continental tilt ; C. W. 



Brown 



- uplift in New Hampshire 



?'()ST-ri,KisTocKNE time. Shifts of land 

 and sea-level in 



I'oTASH deposits of eastern Canada. . . . 



I'owKR-s. S.. Discussion of ^Nllssissippian 

 tuff by 



Prk-Ca.mkrian till argillites 



I'RKLi.Mi.xARY results of R study of the 

 San Francisco Bay sediments : G. D. 

 Louderback 



Prksk.vok of upper Silurian sandstone 

 in Essex County, northeastern Mas- 

 sachusetts ; A. F. Foerste 



Pkksidential address by J. C. Merriam 



. Reference to delivery of 



Price. W. A.. Hydrozoan affinities of 

 Scrpiilites Sowerby 



Princeton Geological Museum. New 

 mounts in the 



Problem of the Texas Tertiary sands. 



Proceedings of the Eighteenth Annual 

 Meeting of the Cordilleran Section, 

 held at Stanford I'niversity, Cali- 

 fornia. April 0-7, 1017 ; J. A. Taff. 

 Secretary 



Eleventh Annual Meeting of 



the Paleontological Society, held at 

 Boston. Massachusetts. December 

 80-31, 1919: R. S. Bassler. Secre- 

 tary 



Fifteenth Summer Meeting, held 



in conjunction with the Sixteenth 

 Annual Meeting of the Cordilleran 

 Section, T'niversity of California 

 and Stanford T'niversity. August 3, 

 4. and .5, 1915 ; .T. A. Taff, Secre- 

 tary 



Nineteenth Annual Meeting of 



the Cordilleran Section, held at 

 Pasadena. California, .Tune 19-22, 

 1919; G. D. Louderbeck, Acting 

 Secretary 



Seventeenth Annual Meeting of 



the Cordilleran Section, held at 

 San Diego. California. August 10. 

 1916 : .T. A. Taff. Secretary 



Thirty-second Annual Meeting 



of the Geological Society of Amer- 

 ica, held at Boston. Massachusetts, 

 December 29-.31, 1919 ; E. O. TTovey, 

 Secretary 



PcGET Sound Basin. Cross-section of. . 



Page 



11;? 

 i;^.-> 



138 

 161 



114 

 112 



113 

 155 



126 

 125 



123 



206 

 233 

 122 



210 



023 

 182 



187 



197 



177 



191 



185 



1 

 189 



Quantitative methods of estimating 

 ground-water supplies ; O. E, Mein- 

 zer 156, 329 



190 



180 

 179 



Radiolarian cherts of the Franciscan 

 group, California ; E. F. Davis. . . . 



Ranciio I^a Brea, Excursion to 196 



Rav. .T. C, Discussion of ore enrichment 



by 



wind sculpturing by 



— ; Examples of successive replacement 

 of earlier suli)hide minerals by later 

 sulphides at Butte. Montana 183 



— : Trllobltes as ancestors 214 



Recent extension of the distribution of 

 marine wood borers in San Pal)lo 

 Bay ; A. E. Barrows 186 



Page 

 Ukcent restorations of fossil inverte- 

 brates ; .T. M. Clarke 204 



— world-wide sinking of ocean level ; 



R. A. Daly 112 



Register of the Boston meeting. 1919. 103 

 of the Paleontological So- 

 ciety 225 



California meeting. 1915 183 



Eighteenth Anniuil ^Sleeting of 



the Cordilleran Section 190 



RayiMoni), 1*. E. ; Middle Ordoviclan of 



Virginia and Tennessee 1.37 



— ; l^ileontological collections in the 



vicinity of Boston 205 



Relations of fault-rock mountains to 



folded chain; .T. B. Woodworth... 115 

 Relationsiih' of Teratornis to other 



reported birds ; T^. II. Miller 185 



Report of the Auditing Committee. . . . 123 

 of the Paleontological So- 

 ciety 209 



Council 5 



of the Paleontological Society 199 



Editor 10 



Photograph Committee 13 



Secretary 6 



— of the T*aleontological So- 

 ciety 199 



— — ■ — Treasurer 8 



— of the Paleontological So- 

 ciety 201 



Research Committee of the National 



Defense organization 190 



Researches in sediments. Chemical... 419 



sedimentation ; T. W. Vaughan . . 



123, 401 

 Resser, C. E. ; Bibliographic studies of 



the Cambrian 213 



Revision of the Anticosti section ; W. 



H. Twenhofel 209 



Rhode Island^ Post-glacial river changes 



in 114 



Road material in New Hami^shire 154 



Rocky Mountain structure in Idaho... 126 

 Rogers, A. F. ; Contact-metamorphic de- 

 posit at the Mountain Lake mine 

 near Salt Lake City, TTtah 162 



— ; Natural history of minerals 189 



— ; Sericite, a low-temperature hydro- 

 thermal mineral 181 



Rogers, G. S., Bibliography of 99 



— , Memorial of 97 



Role of colloidal migration in ore de- 

 posits ; .T. C. Clarke 180 



Salt deposits of eastern Canada 155 



Salton Sea, Changes in the composition 



of the 182 



San Bernardino Mountain. Geology and 



structure of the ; F. E. Vaughan . . 188 



San Francisco Bay sediments 123 



Santa Ff: district of Nevada, Ore de- 

 posits of the 190 



Santo Domingo, Geologic reconnaissance 



in 217 



Schneider, H. ; Geologic age of the 

 Coal Creek batholith and its bear- 

 ing on some other features of the 

 geology of the Colorado Front 

 Itange 182 



Scih;c;hert, C. ; American paleontolo- 

 gists and the immediate future of 

 paleontology 150, 213, 363 



— and C. O. Dinhar ; Stratigraphy and 



diastrophism of western Newfound- 

 land 116 



— ; Diagenesis in sedimentation. . . 123, 425 

 — ; Nature of Paleozoic crustal insta- 

 bility In eastern North America... 116 



