INDEX 
437 
Significance of Cannonball fauna, 
73 
Sills, relations to laccoliths, 209 
Siluria, passing, 233 
Siluric formations of Missouri, 35; 
section of Missouri, 132 
Silver, high assay, 352 
Silver Hill, New Mexico, 352 
Silver Reef of Utah, 384 
Sima region, 182 
Simmons, F. W., mention, 259 
Simoens da Silva, A. C., cited, 198 
Singewald, J. T., Jr., Bolivian Cop¬ 
per Ores, 367; cited, 19, 375; 
quoted, 241 
Sipapu natural bridge, 223 
Siwalik fauna, 188 
Smith, E. A., cited, 364 
Smith, H. H., mention, 258 
Smith, W., cited, 143 
Smith, W. R., Stratigraphic Se¬ 
quence in Patagonia, 418 
Snyder Shale, first use of title, 310 
Socorro silver ores, 387 
Soil, depth in desert, 317 
Some Prairie Tectonics, by C. 
Keyes, 175 
Somme battlefield, geology, 52 
Sotomayor, M., cited, 371 
South American Faunas, Derivation, 
bv F. B. Eoomis, 61; Hippurites, 
272 
vSpan of Isostatic effect, 79 
Sphericity of earth changing, 81 
Springer, F,, mention, 235; quoted, 
77 
Spurr, J. E., cited, 282, 284; quoted, 
405 
Spurr, J. E., Origin of Desert 
Ranges of Mexico, 79 
St. John, O., mention, 258 
Stages of peat growth, 141 
Stanley, W., cited, 200 
Stanton, Tj W., Affinities of Can¬ 
nonball Fauna, 64 
State, and Science, 164 
State Universities, mentality, 54 
Ste. Genevieve group, defined, 40; 
proposed, 39 
Steep Rock Lake fossils, 327 
Streeruwitz, W. H., cited, 281 
Steinmann, G., cited, 20, 373, 243; 
quoted, 193 
Stevenson, J. J., cited, 139 
Stevenson, J. J., Geological Age, 
Characteristics of Coals, 139 
Stillman, J. M., appreciation, 260 
Stokes, H. N., cited, 378 
Stratigraphic Sequence in Southern 
Patagonia, by W. R. Smith, 418 
Stratigraphical Geology, notes, 241, 
417 
Stratigraphy of Black Hills, ter- 
tiaries, by C. Keyes, 63 
Straus, L. W., cited, 375 
Strong, A. M., quoted, 404 
Structural elements of Patagonia, 
421 
Structural Geology, notes, 167 
Structure of trilobites, diagram, 323 
Stutzer, O., cited, 188, 228 
Subterranean waters, flowing, 227 
Suess, E., cited, 28, 32, 111, 180, 190, 
203; mention, 88 
Summit Plain of Colorado Rockies, 
by C. Keyes, 359 
Sundt, L., cited, 372 
Swallow, G. C., cited, 36, 308 
Sweetland Formation, correlation, 
309 
Syncline of Joplin, 380 
Talpadega Slates, age, 363; sketch- 
map, 364 
Taxonomic Significance of Peter 
Sandstone, by C. L- Dake, 288 
Tectonic Setting of Laccolithic 
Genesis, by C. Keyes, 203 
Tectonic Setting of Sierra del Oro, 
111 
Tectonic’ Setting of Utahs High 
Plateaus, by C. Keyes, 176 
Tectonics, prairie, 175 
Telluric stresses, 87 
Tennessee, bentonite, 251; Carters- 
ville formation, 251; volcanic ash, 
251 
Terranal title. Galena limestone, 252 
Tertiaries, Black Hills, by C. Keyes, 
63; Great Basin, 403 
Tertiary Aspects of Lance Beds, by 
W. Cross, 66; earliest, 69; first 
definition, 70; Rocky Mountains, 
70 
Tertic coals, 142; conglomerate of 
Black Hills, 422; Peccary, 357; 
rocks of Patagonia, 418 
Tethys, old continent, 178 
Tetracoralla, extinction, 322 
Texas, potash formations, 249; 
potash wells, 344 
Three Grand Discoveries of Life, 1 
Thrust at Crow’s Nest, by C. Keyes, 
169 
