694 



SUBJECT INDEX 



Mexican manto deposits, 529 

 Miami, Fla., 123, 276 

 Mica, 55, 56, 161, 475 



hydrous, 56 

 Michigan copper, 528, 529 

 Michigan foundry sand, 482 

 Microbrecciation, 533 

 Microchemical methods of geochemical 



prospecting, 549 

 Microfossils, 30, 569, 571 

 Microseisms, 75 

 Mid- Atlantic Ridge, 18 

 Mid-continent area, 148, 164, 607 

 Mid- West Printing Company, 561 

 Migration, of clay particles, 58 



of oil, 30, 611 



of stream bends, 324 



of water, 611 

 Military applications, of sedimentation, 

 85, 268, 633-654, 655-665 



of permafrost, 268 

 Military Geology Unit, 642 

 Milk River, Mont., 415 

 Millstones, 489, 490 

 Milwaukee, Wis., 122, 297 

 Minas Geraes, Brazil, 512 

 Mindanao, 513 

 Mine dumps, 251, 386 

 Mine subsidence areas, 128 

 Mined-out coals, effect of, on founda- 

 tions, 139 

 Mineral, 85, 233, 240, 442, 571 



sedimentary, 485-523 

 Mineral constituents, deformation of, 30 

 Mineral nutrients in lakes, 28 

 Mineral production statistics, 486-492 

 Mineral properties of aggregates, 462 

 Mineralogy of clays, 108, 471 

 Mines, effect of, on foundation, 166 

 Minette limonites, oolitic, 517 

 Mining, in permafrost areas, 267 



of sedimentary mineral deposits, 487 



operations in the sea, 656, 658 

 Minneapolis, Minn., 329 

 Minnesota, 329, 481, 511 

 Miocene, 475 

 Mission Bay, Calif., 297 

 Mississippi, 210, 300 

 Mississippi delta, 26, 211 

 Mississippi River, 122, 210, 217, 327, 

 382, 528 



Mississippi River Commission, 223 

 Mississippian, 518 

 Missouri, 319, 481, 512, 515, 525 

 Missouri Butte, Wyo., 451, 453 

 Missouri River, 148, 331, 411, 440, 443, 



448 

 Mobility of mineral solutions, 541 

 Mode of origin of sediments, 36 

 Model analysis, 300-318 

 Modulus, of elasticity, 155 



of soil reaction, 143 

 Mohawk Trail, N. Y., 142 

 Mohr's theory of rupture, 155 

 Moisture, 100; see also Water content 



conservation of, in soils, 402 



content of, in subgrade, 143 



determination of, 186 

 Mokelumne River, Calif., 382 

 Molding sand, 475, 482, 489 

 Molybdenum in soil, 543 

 Moments in stability analysis, 103, 137, 



242 

 Monazite, 489 

 Monongahela River, 330 

 Montana, 119, 185, 283, 448 

 Monterey Bay, Calif., 284, 475 

 Montmorillonite, 56, 57, 109, 127, 130, 



235, 465, 468, 476, 608 

 Moor soils in military operations, 640 

 Morainal material, 13, 204, 454, 640 

 Moreno formation, 599 

 Morococha, Peru, 530 

 Mortar structure of clays, 109 

 Mosquito Creek Dam, 186 

 Mother Lode gold veins, 528 

 Movable bed load, 69 

 Movement of fluids through porous 



media, 85, 117, 579, 630 

 Mud, 172, 569 



drilling, 569 



sampling, 172 

 Mud boils, 26 

 Mud flow, 135, 230, 255 

 Mud logs (Fig. 1), between 560 and 561 

 Mud lumps, 26 

 Muddy Creek formation, 495 

 Muddy River, Nev., 450 

 Mudpumps in tunneling, 203 

 Mudstones, 233 

 Mulches, effect of, on soil erosion, 400 



