SUBJECT INDEX 



701 



Schweizer Bauzeitung, 204 



Scoria, 454 



Scour, 7, 25, 27, 171, 174, 223, 324, 386, 



392, 658 

 Screen size for well water, 118 

 Screening of aggregate, 454 

 Sea, 8, 11, 24; see also Ocean 



dynamic equilibrium of, 19 

 Sea level, lowering of, 210 

 Sea-water density, 18 

 Searles Lake, 27 

 Seasonal moisture, 142 

 Seasonal temperature, 28, 50 

 Second International Conference on Soil 



Mechanics, 111 

 Secondary porosity, 609, 619 

 Secondary recovery, 581, 604, 616 

 Sediment load, 381, 432 

 Sediment sampler, 171 

 Sedimentary iron deposits, 506-523 

 Sedimentary mineral deposits, 485-523 

 Sedimentary petrology, 656 

 Sedimentary rocks as hosts for ore de- 

 posits, 524-536 

 Sedimentation, dynamics of, 3 



in canals, 392 



in channels, 392 



in harbors, 291-299, 300-318 



in natural stream channels, 320, 325, 

 390 



in reservoirs, 76, 347, 363, 390, 396 



on land, 390 



rate of, 292 

 Sediments, 3-41 



ancient, 3 



as sources of ground water, 118 



as tunnel headings, 208 



classification of, 31, 177 



consolidation of, 3 



cosmic, 20 



deep-sea, 20, 22 



deposited on submerged ridges, 11 



effect of, on former shore lines, 23 

 on living matter, 391 

 on underwater sound, 657 



function of, 64, 66 



glacial, 13 



ice-raft, 20 



measurements of, in streams, 68, 381 



organic, 15 



production of, 64, 338, 384 



Sediments, size distribution of, 10 



transportation of, laws of, 62 



volcanic, 15 



water content of, 30 



wind-blown (eolian), 20 



winnowing of, 19 

 Seepage, 186, 197, 221, 222 



forces of, 104, 223, 239 

 Seepage-control measures, 187, 191 

 Seismic permafrost waves, 257 

 Seismic prospecting, 85, 90 

 Seismic resistivity, 145 

 Seismograph, 78, 87 

 Seismological Society of America, 92 

 Seismology, 75, 88, 90, 92, 128 

 Self-potential in electric logging, 81, 563 

 Semi-arid sediments, 12, 54, 230, 407 

 Semi-permeable barriers, 598 

 Sepiolite, 465 

 Serpentine, 513, 530 

 Sesquioxides, 58 



Settlement, 96, 108, 175, 178, 264 

 Settling velocity of sediments, 8 

 Sevier River, Utah, 382, 412 

 Sewage disposal in permafrost area, 258, 



268 

 Shale, 33, 131, 161, 185, 233, 490, 561, 

 611, 638 



foundations of, 157, 163 



porosity of, 610 

 Shape, of aggregates, 460 



of foundry sand grains, 476 



of land, 17, 46, 67 



of openings in calcareous rocks, 618 



of particles, 32, 108, 232, 442, 571, 659 

 Sharpe's classification of landslides, 229 

 Shasta County, Calif., 515 

 Shaver Lake, Calif., 53 

 Shear, 100, 137, 138, 152-156, 172, 232, 



241 

 Shear tests, 137, 154 

 Shearing of a foundation, 149 

 Shearing resistance, 137, 163 

 Shearing strength, 97, 98, 102, 108, 148, 

 160, 161, 184, 186, 193, 222, 223, 

 235, 239 



of shale, 162 

 Sheet erosion, 6, 26, 383, 398, 400 

 Shield, use of, in tunnels, 202, 203 

 Shingling as index of stream flow, 496 

 Shiprock, N. M., 417, 423 



