994 



SUBJECT INDEX 



Seismic wave velocities, 22-24, 44, 439- 

 441, 448-452, 454, 464-466, 468-480, 

 497, 498, 500, 501, 504, 505-550, 

 557-571, 578, 862, 863, 943, 944, 956 



apparent -, 440, 521-524, 526, 528, 

 529, 541, 542, 545, 550, 564, 927, 935 



average -, 23, 24, 25, 42, 441, 568-570 



differential -,465, 473, 476, 568, 862, 863 



factors affecting -, 474-477 



horizontal -, 464 



vertical -, 465, 473, 476, 568, 862, 863 

 Seismic well shooting, 23, 34, 35, 465, 



568, 862, 863 

 Seismogel, 485 



Seismogram, 22-24, 451, 573-575, 913, 923 

 Seismograph (see also Detector) : 



Ambronn -, 612, 613 



Askania -, 609 



Benioff -, 595, 614 



calibration of -, 615-618 



capacitive-, 20, 552, 610, 612, 931, 932 



classification of -, 579-580 



crystal -, 20, 613 



damping of -, 583-586 



electrical -, 20, 551-552, 592-597, 601- 

 607, 609-613, 615, 912, 917, 932 



electromagnetic -, 20, 551-552, 592- 

 597, 601-607, 609-610, 917 



Ewing -, 580 



forced oscillations of -,586-591 



free oscillations of -, 581, 582 



friction in -, 582, 583 



Galitzin -, 580-584 



Gray -, 580 



horizontal -, 127, 129, 130, 163, 168, 

 680, 917 



hot wire -, 613 



I.G.E.S. -, 610 



inductive -, 551, 592-595, 609-611 



mechanical -, 591, 592, 607-609, 917 



Milne -, 580 



Mintrop -, 607-609 



pallograph -, 580 



piezoelectric -, 613 



pressure type -, 612, 613 



prospecting -, 581, 607-615 



Rebeur-Paschwitz -, 580 



reluctance -, 552, 610, 611, 862 



Schweydar -, 580, 609 



series -, 550 



station -, 581, 583, 589, 590, 615 



Tanakadate -, 580 



theory of -, 580-591 



transients, effect on -, 589-591 



vertical -, 127, 132, 551, 580, 917 



Vicentini -, 580 



well detector -, 568, 862 



Wenner -, 584, 614 



Wiechert -, 484, 580, 583 



Wood-Anderson -, 580, 584, 614 



Zoellner -, 580 

 Seismology, 3, 440 



engineering -, 441, 910-928 



Seismometer (see Seismograph) 

 Self-potential method, 8, 25-27, 39, 53, 

 58, 63, 619, 621-624, 667-681 



corrections in -, 675 



electrodes in -, 669, 670 



equipment in -, 669, 670 



interpretation in -, 671-675 



procedure in -, 670, 671 



results of -, 675-681 

 Senarmontite, density of, 78 

 Sensitivity (see Scale value) 

 Series detectors, 550 

 Serpentine, 55, 76, 405, 422, 432, 433 



coercive force and remanent mag- 

 netization of -, 316 



density of -, 80, 81 



heat conductivity of -, 849 



resistivity of -, 658, 660, 661 



s.usceptibility of -, 310, 312 

 Shafts, 57, 58, 407, 740 

 Shaking table, 616, 617, 618, 917 

 Shale: 



density of -, 76, 83, 84 



- formation, 24, 34, 51, 162, 284-286, 



419, 420, 441, 474, 676, 677, 706, 

 735, 736, 738, 772, 836, 864 

 longitudinal wave velocity of -, 470 

 resistivity of -, 661, 836, 837 

 susceptibility of -, 312 

 Shallow wells, 862, 865, 866, 868, 880, 



887, 889 

 Shear : 



- modulus, 445 



- stresses and strains, 442, 446, 448 



- zones, 742, 754-756, 884, 885, 904-907, 



909, 928-930, 933, 958 

 Shell limestone, density of, 84 

 Shepard tester, 725 



Ships, measurements on, 41, 42, 945-956 

 Shoestring formations, 45, 47, 422, 433 

 Shooting, technique of, 483-490, 503, 



551 570 571 

 Shot-hole' drilling, 490-492, 571 

 Shot-instant transmission, 465, 493r497, 



503, 555 

 Shots, placement of, 489, 490, 503, 550, 



551, 569-571 

 Siderite: 

 density of -, 78 

 dielectric constant of -, 666 



- ore, 50, 287 

 resistivity of -, 658 

 susceptibility of -, 311 



Side-wall sampling, 47, 869 



Siemens compensator, 843, 844 



Silence zones, 935, 936 



Silica content: 



effect of -, on elastic properties of 



rocks, 474 

 effect of -, on rock density, 73 

 effect of -, on rock magnetism, 314 



Siliceous lime, density, 81 



