SUBJECT INDEX 



683 



Cohesionless sand, 136 



Cohesive bond, 143 



Cohesive running sediments, 194, 200 



Cohesive sediment, 178 



Cold Spring Harbor, N. J., 278 



Cold-storage excavations, 268 



Colemanite, 491 



Collapse of caverns, 167 



Colloids, 32, 56-60, 97, 234 



clay, migration of, 55 



humus, 28, 57, 60 



iron, 508 



silica, 629 

 Color, 42, 470 

 Color symbols for logs, 561 

 Colorado, 25, 121, 382 

 Colorado River, 333, 360, 367, 392, 443 



in Texas, 382 

 Colorado River Basin, 237, 412, 413 

 Colorado-Utah vanadium ores, 487 

 Colorimetric analysis, 85, 549 

 Columbia River Basin, 113, 333, 412, 449 

 Columbia University Press, 230 

 Columbium concentrates, 488 

 Column footing, 149 

 Commerce, Mo., 218 

 Committee on Sedimentation, 40 

 Compaction, 29, 30, 138, 140, 161, 607- 



610, 659 

 Competent beds, 165 

 Competent bottom velocity, 70 

 Composite deposits, 207 

 Composition, of clays, 464 



of connate fluids, 85 



of sediments, 231 

 Compressed air in tunneling, 194-205 

 Compressibility, 95, 101, 184 



of aggregate, 459 

 Compressive strength, 153, 160, 161, 166 



unconfined, 100, 154, 240 

 Compressor plant, 202 

 Conakry deposits, 513 

 Concentration, ionic, 16, 24, 55, 80, 596 



of calcium carbonate in water, 24 

 Concrete, 148 



Concrete aggregate, 437-463, 639, 646 

 Concrete bond, 154 

 Concrete dams, 182 

 Concretions, 54, 457, 518 

 Condensate pools, 580 

 Conductivity of sediments, 81 



Configuration of basin of deposition, 10 

 Congelifraction, 248, 255 

 Congeliturbation, 248, 255 

 Conglomerate, 81, 131, 160, 232, 489, 



561, 619, 638 

 Connate water content, 563, 595, 608, 619 

 Consolidation, 104, 153-157, 186, 235- 

 240 



due to desiccation, 108 

 Consolidation embankments, 191 

 Consolidation rock, 3, 30, 33 

 Consolidation tests, 186 

 Constituent particles, size of, 23 

 Construction, embankment, 191 



on soils, 128 



on sedimentary rocks, 131 

 Construction erosion, 386 

 Construction materials, in earth dams, 

 187 



in military operations, 646 



in permafrost areas, 264 

 Contact angles, 601 

 Continental environments, 25, 121 

 Continental glaciers, 210 

 Continental shelf deposits, 22 

 Continuous instrumental logging, 567 

 Contour farming, 403 

 Contra Costa Canal, 373 

 Control, of erosion, 337, 398, 403, 426 



of gullying, 425 



of silting, 367 

 Convection, 10 

 Coolidge Dam, 409 

 Copper, 488, 491, 513, 524-529, 540 



in soil, 543 

 Copper Basin Dam, 443 

 Coquinas, 619 



Coral deposits, 24, 456, 637, 648, 658 

 Cores, 128, 152, 569, 598, 660 



analysis of, 569, 617, 624, 628 



collapsibility of foundry sand, 480 

 Cornell University, 475 

 Corps of Engineers, 147, 154, 190, 264, 



265, 291, 309, 319, 336 

 Corrective treatment for gullies, 425 

 Correlation, 562 

 Corundum, 489 

 Cosmic dust, 20, 261 

 Cost, of beach erosion, 282 



of concrete aggregate, 439 



of debris control, 339 



