700 



SUBJECT INDEX 



Rock slide, 135, 230, 233, 238 



Rockfall, 230, 238 



Rocky Mountains, 147, 413, 446, 609 



Rodessa Field, La., 582 



Rolled fill, 189, 190 



Rome formation, 162 



Roosevelt, Ariz., 397 



Roots, as agents of erosion, 8 



respiration of, 54 

 R0ros district of Norway, 540 

 Roswell, N. M., 420 

 Rota, 642 



Rotary drilling, 560 

 Rotation of the earth, 19 

 Rotterdam, 111, 234 

 Roughness, of model channels, 306 



of stream bed, 8, 68, 69 

 Roundness, 233 

 Roundness maps, 572 

 Royal Astronomical Society, 92 

 Rubies, 489 



Running ground in tunnels, 194, 200, 202 

 Runoff, 76, 394 



Runways for airplanes, 143, 258 

 Rupture, Mohr's theory of, 155 

 Rushville Bend, Missouri River, 321 

 Russia, 42, 48, 538, 548 

 Ruth dredger, 372 

 Ruthenium, 488 

 Rutile, 475, 488, 572 

 Ryukyu Islands, 643 



S 



Sabine River, La., 382 



Sacramento, Calif., 169, 292 



Sacramento River, Calif., 333, 337 



Saddle spillway for dams, 185 



Safe bearing capacity, 149, 155 



Safety, factor of, 104, 138, 156, 172, 191, 



223, 242 

 Safford, Ariz., 410, 422, 428 

 Sagami Bay, 653 

 Sago pondweed, 366 

 St. Anthony's Falls, Minn., 329 

 St. Joseph Lead Co., 524 

 St. Lawrence River, 512 

 St. Louis, Mo., 127, 291, 328 

 St. Nazaire, France, 294 

 St. Peter's sandstones, 122, 481, 609 

 Saipan, 642, 649 



Salado River, N. M., 411 



Saline City Bend, Missouri River, 321 



Saline sediment, 131, 495 



Saline soils, 48, 49 



Salinity in model studies, 311 



Salt, 16, 21, 27, 31, 138, 167, 491, 565, 623 



Salt Lake City, Utah, 407 



Salt River, Ariz., 382 



Saltation of pebbles, 8 



Salzgitter ores, 517 



Sample logs, 560 



Samplers, 99, 129, 203, 350, 662 



for suspended load, 66 

 Sampling, 99, 129, 171, 174, 207 



for chemical analysis, 543 

 San Bernardino, Calif., 420 

 San Carlos Reservoir, 397, 409 

 San Diego, Calif., 382, 656, 660 

 San Francisco, Calif., 3, 47, 109, iii 



earthquake in, 236 

 San Gabriel Mountains, 336, 338 

 San Juan Mountains, Colo., 232 

 San Juan River, 417 

 San Leandro Creek, Calif., 382 

 San Manuel copper deposits, 543 

 San Marcial, N. M., 392 

 San Miguel, Colo., 232 

 San Pedro, Calif., 297 

 San Simon Gully, Ariz., 409, 414, 428 

 Sand, 31, 160, 219, 440, 489, 640, 646 



foundry, 475-482 



internal friction of, 190 



toughness number of, 480 

 Sand-blast sand, 489 

 Sand boils, 222 

 Sand drains, 141 

 Sand dunes, 637 

 Sand-shale ratio, 576 

 Sandstone, 131, 638 

 Sandstone foundations, 161, 221 

 Sangamon River, 111., 401 

 Santa Barbara, Calif., 279, 297 

 Santa Fe, N. M., 420 

 Santa Inez River, Calif., 382 

 Sao Paulo, Brazil, 205 

 Sapphire, 489 



Sardis Dam, Miss., 184, 188, 220 

 Saturation, 15, 16, 100, 599 

 Savannah Harbor, Ga., 294, 309 

 Scheelite, 488 

 Schist, 190 



