G7G 



BULLETIX OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



rRKCA.MBUiAX rocks in the Medicine Bow 

 Mountains of Wyoming : E. Black- 

 welder and H. F. Crooks 97 



— sedimentary rocks in the highlands 

 of eastern Pennsylvania : E. T. 

 Wherry 375 



Presext status of the problem of the 



origin of loess : C. W. Tomlinson . . 7?. 



Presidextial address by J. C. Merriam 120 



. Experiment in geologv ; Frank D. 



Adams 82. 107 



PuixciPLES of classification of Cyclo- 

 stome bryozoa ; F. Canu and R. S. 

 Bassler lol 



Proboscidea. Generic nomenclature of. 141 



— . Phylogeny of 138 



I'RfiCEEDixGS of the Ninth Annual Meet- 

 ing of the Paleontological Society, 

 held at Pittsburgh. Pennsylvania. 

 December 31. 1917, and January 1 

 and 2. 1918. R. S. Bassler. Secre- 

 tary 110 



Thirtieth Annual Meeting of 



the Geological Society of America, 

 held at Saint Louis. Missouri. De- 

 cember 27. 28. and 29, 1917. E. O. 

 Hovey. Secretary 1 



Proposed correlation of the Pacific and 



Atlantic Eocene ; R. E. Dickerson . 148 



PsELDOTAPiRS of the North American 



Eocene 1-j- 



Pr.MA-LiKE cats of Rancho La Brea : 



.1. C. Merriam 161 



Ptrdue. a. H.. Memorial and bibliog- 

 raphy of 55, 60 



QuERCUS of the West Indies 650 



Raxcho La Brea. Puma-like cats of... 161 



Rath. G.. cited on Lo.ia Basin fossils. . 640 



Reck. F. B.. cited on Tendaguru series. 265 



Records of three very deep wells drilled 

 in the Appalachian oil fields of 

 I'ennsvlvania and West Virginia ; 

 I. C. White 96 



Reeds. C. A. ; New bathymetrical map 



of the West Indies region 142 



Reef-excircled islands. Subsidence of. 



71. 489 



Reeside. , cited on Sundance for- 

 mation -57 



Register of Pittsburgh meeting of 



Paleontological Society 155 



the Saint Louis meeting. 1917... 106 



Stanford meeting of the Paleon- 

 tological Society 166 



Reid. Mellard. cited on heat action. . . 177 



Relatiox between occurrence and qual- 

 itv of petroleum and broad areas of 

 uplift and folding: E. W. Shaw. . . 87 



the Mesozoic floras of North and 



South America: F. H. Knowlton.. 



129. 607 



Paleozoic floras of North and 



South America : David White 129 



Relatioxships of recent and fossil in- 

 vertebrate faunas on the west side 

 of the Isthmus of Panama to those 

 on the east side: Ida S. Oldroyd. . 162 



the Mesozoic reptiles of North and 



South America : S. W. Williston . . . 138 



Relatioxs of the oil-bearing to the oil- 

 producins: formations in the Paleo- 

 zoic of North America ; A. W, Gra- 

 bau 92 



Report of the Auditing Committee. ... 83 



Committee on Photography. ... 69 



Page 



Report of the Council 4 



of the Paleontological So- 

 ciety 123 



Editor 9 



Geology Committee of the Na- 

 tional Research Council by John M. 



Clarke, chairman 69 



Secretary 5 



of the Paleontological So- 

 ciety 123 



Treasurer 7 



of the Paleontological So- 

 ciety 125 



— on a collection of Oligocene plant 

 fossils from Montana ; O. E. Jen- 

 nings 147 



Reptiles of the Mesozoic of North and 



South America 138 



Revisiox of the Mississippian forma- 

 tions of the upper Mississippi Val- 

 ley : S. Weller and F. M. Van Tuyl 93 



pseudotapirs of the North 



American Eocene ; O. A. Peterson . 152 



Reyer, : cited on experimental 



geology 176 



Retxales limestone 344 



Rhixoceroses. Notes on Pliocene 153 



Rich, Johx L. : Dating of peneplains : 

 an old erosion surface in Idaho. 

 Montana, and Washington — is it 



Eocene ? 89 



— . Discussion of loess by 73 



Pleistocene deposits by 78 



RocKV Mountain section in the vicinity 

 of Whitemans Pass : C. W. Drys- 



dale and L. D. Burling 145 



Rogers. H. D.. cited on Pennsylvania 



Precamhrian 376 



Roth, Justus, cited on experimental 



geolog.v 182 



Rutile-bearixg rocks. Petrology of . . . 100 



Sagixaw Basin. Relation to uplift of 



glacial lakes of 75 



Saixt Croix, Geology of 620 



Saixt Lawrexce basin. Changes of alti- 

 tude of the 214 



. Limitations of Precamhrian no- 

 menclature in 90 



Saixt Louis meeting, Register of 106 



Salfeld. H.. cited on Peruvian fossils. 611 

 Saliext features of the geology of the 

 Cascades of Oregon, with some cor- 

 relations between the east coast of 

 Asia and the west coast of Amer- 

 ica ; W. du P. Smith .^ 81 



Salixe water and mud. Separation of 



salt from 80 



Salisbury. R. D.. cited on Pennsylvania 



peneplains f>J^ 



Salt from saline water and mud 471 



— separation from saline water and 



mud of 80 



Saxdstoxe beds. Absence of water in 



dry 105 



Sax Lorexzo formation of California. . . 299 

 Sapper, Carl, cited on Honduras fossils 608 



Sarle, . cited on fossils from Iron- 



dequoit limestone 352 



Sauquoit beds 341 



Savage. T. E. ; New points in Ordovician 



and Silurian paleogeography 88 



— ; Tentative correlation of the Penn- 

 sylvania strata in the eastern in- 

 terior, western interior, and Appa- 

 lachian regions by their marine 

 faunas 97 



