692 



SUBJECT INDEX 



La Crescenta area, 344 

 Laboratory experiments, in permeability, 

 534 



on soil strength, 97 

 Laboratory tests, 151, 153, 222, 233 

 Lac-a-la-Tortue, Quebec, 518 

 Lagoons, 24 



Lahn-Dill deposits, Germany, 516 

 Lake Constance, 64 

 Lake Gerzen, Switzerland, 109 

 Lake Lynn Dam, W. Va., 157, 164 

 Lake Mead, 333, 359, 495, 662 

 Lake Pepin, 329 

 Lake Pontchartrain, 326 

 Lake Superior iron region, 119, 507, 514 

 Lakes, 6, 8, 11, 24, 28, 49, 131, 517 



deposits of, 28, 129, 207 



formed by landslide, 238 



hydrogen sulphide in, 28 



iron content of, 508 



mineral nutrients in, 28 

 Laminar flow, 116 

 Laminated sedimentary rocks, 11, 33, 161 



relation of, to permeability, 604 

 Lamotte sandstone, 532 

 Land forms, 638 

 Land use, 418-425 

 Landslides, 14, 94, 102, 108, 135, 229- 



246, 383, 651 

 LaSalle County, 111., 467 

 Las Vegas, Nev., 481 

 Laterite, 58-60, 506, 513, 643, 651 

 Lattice control of correlation profiles, 575 

 Lava flows, 15 



Laws of sediment transportation, 62, 75 

 Layers, 11 

 Leaching, 44, 46, 52, 440, 457, 526 



of silica, 58 

 Lead, 84, 488, 524, 528 



in soils, 540, 542 

 Lead-zinc replacements, 530 

 Leadville, Colo., 529, 532 

 Leaf samples, 546 

 Leakage in foundations, 148, 158, 165, 



188, 223 

 Leduc Oil Field, 560, 599 

 Lees Ferry, 412 



Legal requirements in soil conservation, 

 403 



Leixoes, Portugal, 297 



Length of piles, 226 



Leucoxene, 475 



Levees, 181, 219-222, 319, 381, 396 



natural, 25 

 Leverett Reservoir, 599 

 Levis soil, 48 

 Leyte operations, 646 

 Life of a reservoir, 348, 359 

 Light-burning clays, 469 

 Lignite, 121 



Lime horizons, formation of, 42, 54 

 Limestone, 16, 21, 24, 31, 112, 113, 130, 

 185, 199, 233, 437, 444, 457, 491, 

 525, 527, 561, 579-616, 638 



bentonite beds in, 166 



cavities in, 16, 625-627 



foundations on, 158, 165, 166, 183 

 Limnite, 512 

 Limnology, 28 

 Limonite, 56, 59, 464, 512 

 Linares district of Spain, 528, 529 

 Lincoln Highway, 142 

 Liner plates in tunnels, 200 

 Lining of canals, 370 

 Liquefaction of sand, 236 

 Liquid hydrocarbons, 616 

 Liquid limit, 99-101, 467 

 Lithofacies, 576 

 Lit hof unctions, 43, 46 

 Lithology, 570 

 Lithosequence, 46 

 Little Tallahatchie River, 188 

 Littoral drift, 283, 297 

 Littoral sediments, 22, 394 

 Livestock population in western states, 



419 

 Living organisms, relation of, to environ- 

 ment, 17 

 to permafrost, 259 

 Llano-Burnet uplift, 533 

 Load, 30, 63, 349, 381 



bed-material, 63, 64 

 Loading, on rock, 156 



on tunnel supports, 208 

 Loading capacity, 141, 154, 175, 264, 639 

 Loading tests, 175, 177 

 Loam in military geology, 640 

 Locks in streams, 220, 226, 292, 319, 330 



foundations for, 148 

 Loess, 12, 213, 221, 640 



