INDEX TO VOLUME 20 



747 



Page 



Saint Louis Academy of Science, Ref- 

 erence to 265 



Saint Vincent, Creation of shorelines. 



423-426 



— — , Eruptions in island of 417-426 



, Figures showing gorges and val- 

 leys, on Soufriere 414-416, 



418, 420, 424 



, Rabaka River valley 424,425 



Salisbury, R. D., Physical geography 



of the Pleistocene 704 



—.Reference to 165,434,447,464, 



505, 509, 513, 603, 605, 642 



Salomon, , Reference to 666 



Salt Lick Fern Glen beds, Thickness 



of 268 



Sampson, F. A., Reference to Fern Glen 



collections of 269 



Sand-blast action, Striations produced 



by 410-413 



Sand dunes of Silver Peak region 249 



Sands and gravels, Western Iowa Af- 



tonian 399-408 



— bearing molluscan fossils, Aftonlan. 



402, 403 



Sangamon interval 143 



Sandstone, Age of the Gaspe" 688 



— , Connecticut valley 437 



Sandstones, Rhyolite in the Esmeralda 



formation 255 



— , Trap sheets underlying Keweena- 



wan 207 



Sankaty beds, Age and geologic rela- 

 tions of Nantucket 701 



Santa Lucia mountains, Reconnais- 

 sance about the big sur-region of 



the 708 



Sapper, Karl, Reference to 590 



Savage, T. E., Reference to 134, 136, 



400, 537 

 — , Reference to description of Aftonian 



peat beds by 139 



Schists, Calcareous augen- 231 



— -, Granite augen- 231 



— of the Silver Peak quadrangle.. 231-232 



Sohncke, L., Reference to 386,388 



Schoenflies, A., Reference to... 370,371, 



385, 386, 393, 397 

 Scott, William B., Reference to.. 354,436 

 Schuchert, Charles, Paleogeography 



of North America 659 



— . Record of remarks on age of the 



Gasp6 formation 695, 696 



— , Reference to examination of grapto- 



lites 243 



— , Reference to 436, 450, 452, 457, 



461, 470, 483, 486, 490, 

 501, 506, 526, 573, 603, 

 689, 694, 697, 698, 700 



— , Title of paper by 427 



Seas, Map of North American conti- 

 nental 447 



— , North American continental 446 



Secretary, Report of 609 



Sedgwick, , Reference to 513 



Sediments, Chemical composition as a 

 criterion in identifying metamor- 

 phosed 667 



— , Keweenawan and Animikie 198 



Seismograph, Proposed form of ?08 



Sellards, , Reference to 569 



Serpentine of quadrangle of Silver 



Peak 262 



Shale, New Providence 325-326 



Shaler, N. S., Reference to 621 



Shattuck, George Burbank, Some 

 physiographic features of the Sha- 



wangunk mountains 670 



Shawangunk mountains, Some physio- 

 graphic features of 670 



Shift, Horizontal and dip- 172 



~ Page 



Shimek, Bohumil, Aftonian sands and 



gravel in western Iowa «6£& &q 



— , Reference to "Aftonian sands and ' ' 



gravels" by 342 



— , Reference to 134-137 



— , Title of paper by 399 



Shimer, H. W., Age and relations of 



the Sankaty beds 701 



Shorelines, Creation of Saint Vin- 

 cent 423-426 



Shutt, F. T., Analysis of Ottawa river 



water by 158-159 



Sierran period, Reference to 248 



Snake River fields, Basalt in 219 



Silver Peak quadrangle, Desert varnish 



of • • • • • 229-230 



, Drainage and water supply of. 227 



, Extent and topography of . . . . 226 



, Geology of 224-264 



, Precipitation of 228 



, Scenery of 228-229 



.Water supply of 227-228 



range, Map of 225 



Sills, Arguments in favor of intru- 

 sive 215 



Singewald, Joseph T., Jr., Iron ores 



of Maryland, paper by (abstract) . 671 



Siluric formations, Table of 533 



Small wood, Martin, Reference to.... 631 

 Smith, George Otis, elected Councilor. 616 



— , Reference to 659, 667 



Smith, James Perrin, cited on disper- 

 sion of Purpura lapillus 444 



— , Reference to 555, 561, 572, 



576, 578 

 — , Synopsis of the stratigraphy of Cali- 

 fornia, paper by 708 



Smith, John Will, Reference to 682 



— , Strata, Reference to 439 



Sloan, Earle, elected Fellow 617 



Soils in situ, Remnants of old 207 



Soufriere, U-shaped valleys of . . . 414-416 



— ,1902-1903 eruptions of 409-426 



Sollas and Sollas, Reference to. . . 434, 475 

 South Carolina granites (quartz mon- 



zonites) , Petrology of 668 



Solute, The terrane and river 155 



Spp:nce, H. A., Reference to 418 



Spencer, J. W., Reference to. 630,632,670 



Springs near Silver Peak 228 



Springer, Frank, cited on the Lake 



Valley beds 326 



Spruce River gorge, Diabase sheet in. 



204-205 

 Spurr, J. E., cited on veins or dikes of 



quartz 237 



— , Reference to 225, 248, 574 



Stanley-Brown, Joseph, elected Editor. 616 



— , Report of Editor 614-615 



Stanton, T. W., cited on marine in- 

 vertebrates found in Trinidad sand- 

 stone in Raton field 365 



— , cited on the Ripley fauna 592 



— , Reference to . . . 430, 580, 581, 584, 585, 

 586, 590, 592, 593, 594 

 — , Succession and distribution of later 



Mesozoic invertebrate faunas 704 



State surveys, Historical notes on 



early 671 



Stauffer, C. R., Reference to.... 640,643 

 Steiger, George, Analyses of pyrox- 

 ene by 262 



rhyolitic lavas by 254, 256 



schists by 232-233 



— . Analysis of basalt of Piper peak by. 258 



— latite-granophyre 257 



■ — quartz-monzonite gneisses by.. 230 



yellow mineral corresponding 



to chloropal, by 263 



Vesuvianite, by 261-262 



