448 



BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 Sculpturing of rock by winds in the 



Colorado Plateau Province ; W. E. 



Gregory 179 



Secretary-'s report 6 



— — of the Paleontological Society. . . . 199 

 Sedimentary deposits, Criteria in the 



study of 411 



Sediments, Chemical investigation of.. 123 



— , Chemical researches in 419 



— . Mechanical investigation of 123 



— of San Francisco Bay 123 



— , Value of terrestrial organisms in 



the interpretation of 123 



Sedimentation, Diagenesis in. . . . 128, 425 



— in researches 123 



— , Researches on 401 



— , Symposium on researches in 123 



Sericite, a low-temperature hydrother- 



mal mineral ; A. F. Rogers 181 



Shaw. E. W. ; Discussion of sedimenta- 

 tion by 124 



— ; Mechanical, researches in the inves- 

 tigation of sediments 123 



— ; Physical and geographic criteria in 



the study of sedimentnry deposits. 411 



Sierra Nevada of California, Fault s.vs- 



tem of the. - 127 



— Mountains of California, Copper belt 



of the 189 



— , Structure of the southern 183 



Significance of the Middle Siluric in 

 American and European geology ; 



A. W. Grabau. 138 



Silurian sandstone in northeastern 



Massachusetts 206 



Siluric in American and European geol- 

 ogy 138 



Sinclair, N. J. ; New mounts in the 



Princeton Geological Museum 223 



Small mammals in the Marsh collec- 

 tion of Yale University ; E. L. 



Troxell 223 



Smith, W. D., Discussion of California 



and Oregon stratigraphy by 192 



scarp-producing faults by 195 



— tidal stress by 193 



— , Exhibit of lantern slides by 194 



— ; Physiographic control in the Philip- 



pines 181 



Smithsonite, Chemical data bearing on 



formation of 161 



Smoker, Annual 122 



Sloth group, Cenozoic history of the 



ground 194 



Some chemical factors affecting second- 

 ary sulphide ore enrichment ; S. W. 

 Yoang 180 



— examples of progressive changes in 



the mineral composition of copper 



ores ; C. F. Tolman; Jr 180 



- — features of stream development and 

 of glaciation in the Catskill Moun- 

 tains ; H. E. Merwin 152 



— indications of climatic zones in Cali- 



fornia during lower Eocene time ; 



R. E. Dickerson 185 



— interesting changes in the composi- 



tion of the Salton Sea ; A. E. Vin- 

 son ; 182 



— physiographic features of bolsons ; 



H. E. Gregory 179 



— results of deep drilling in the Ap- 



palachian oil and gas fields ; I. C. 



White 157 



South Dakota, Oil possibilities in ... . 195 

 Spo^^ges of the Middle Cambrian ; C. D. 



Wolcott 222 



Spurr, J. E., Reference to "Origin and 



structure of the basin ranges" by. — 



Page 



Standard of Fellowship, Interpretation 



of 149 



Status and limits of the Paleocene ; 



W. D. Matthew 221 



Steidtmann, E. ; Feldspars as indi- 

 cators of sedimentary or igneous 

 origin of gneisses and schists 141 



Stock, C. ; Cenozoic history of the 



ground sloth group 194, 232 



— ; Memorial address on C. A. Waring 



by 203 



— ; N othrotheriii m shastense, a Pleisto- 



cene ground sloth of North Amer- 

 ica, with remarks on the Megalony- 

 chidas 225 



— , Secretary ; Minutes of the Ninth An- 

 nual Meeting of the Pacific Coast 

 Section of the Paleontological So- 

 ciety 231 



Stose, G. W., Discussion of Rocky 



Mountain structure by . . 126 



Stratigraphic and age relations of the 

 scarp-producing faults of the Great 

 Basin ; G. D. Louderback 195 



■ faunal relations of the Meganos 



groap (Middle Eocene), California; 



B. L. Clark 192, 232 



— significance of Orthaulax; C. W. 



Cooke 206 



Stratigraphy and diastrophism of west- 

 ern Newfoundland ; Charles Schu- 



chert and C. O. Dunbar 116 



— , Fossils as aids in teaching 383 



— of the Virgin Islands of the United 



States and of Culebra and Vieques 



islands ; T. W. Vaughan 216 



Structural and petrographic geology ; 



J. F. Kemp 351 



— features of the southern Ouachita 



Mountains, Oklahoma ; C. W. Honess 121 

 Structure of the Coast Ranges of Cali- 

 fornia ; B. Willis 193 



some mountains in New Mexico ; 



N. H. Darton 116 



— — the lithosphere ; B. Willis 188 



— ■ — • — southern Sierra Nevada ; J. P. 



Buwalda 183 



Studies in variation and a proposed 

 classification of variants ; Presiden- 

 tial address bv R. T. Jackson 209 



Study of the entelodonts ; E. L. Troxell 223 



life processes in fossils ; R. S. 



Bassler 222 



Submergence and post-glacial uplift in 



New Hampshire 112 



Sulphide minerals, Replacement of . . . 183 



— ore enrichment 180 



Supposed fossil horse from the late 



Pleistocene found at Monroe, Orange 

 County, New York; .1. M. Clarke 

 and W. D. Matthew 204 



Survey of road material in New Hamp- 

 shire ; J. N. Goldthwait 154 



Sweet Grass Hills, Montana ; J. F. 



Kemp and P. Billingsly 158 



Symposium on problems of the North 



Pacific Ocean 193 



— ■ — -researches in sedimentation 123 



— ■ — • sedimentation. Papers composing a 401 



— — teaching of geology and paleontol- 



ogy, Papers composing a 149, 339 



— — • paleontology 213 



Taff, .1. A., Secretary ; Proceedings of 

 the Eighteenth Annual Meeting of 

 the Cordilleran Section, held at 

 Stanford University, California, 

 April 6-7, 1917 187 



— — ; Proceedings of the Fifteenth 



Summer Meeting, held in conjunc- 



