SUBJECT INDEX 



967 



Automobile, magnetic effect of, 373 

 Auxiliary magnet {see Magnet, auxiliary) 

 Average velocity (see Seismic waves, 



velocity of) 

 Azurite: 



density of -, 78 



susceptibility of -, 310 



B 



induction - 819, 820, 822 



Jolly -, 72 



magnetic - (see Magnetometer) 



torsion - (see Torsion balance) 



vertical gravity gradient -, 190-192 



Baldwin receiver, 595, 948 



Ballistic galvanometer, 305, 306, 307, 

 359, 360, 361, 363, 893, 894 



Ballistic metnod of measuring suscepti- 

 bility, 306, 307 



Balloon, 19, 407, 408 



Barite : 



density of -, 79 



- deposits, 50, 55, 70, 288 

 dielectric constant of -, 666 



Barometer, 119, 123 



Barometric method of measuring grav- 

 ity, 123, 124 

 Barret terrometer, 628, 823 

 Barye, 452-454 



Basalt, 73, 76, 290-292, 414, 415, 432-435, 

 512, 513 



coercive force and remanent mag- 

 netism of -, 316 



density of -, 81 



dielectric constant of -, 666 



elastic moduli of -, 467 



heat conductivity of -, 849 



longitudinal wave velocity of -, 472 



radioactivity of -, 874 



specific heat of -, 848 



susceptibility of -, 314, 432 

 Basaltic glass, density of, 81 

 Base correction, 17, 135, 332, 338, 339, 



372 373 

 Base station, 135, 338, 339, 372, 373 

 Basement rocks, 4, 19, 43, 46, 53, 70, 

 160, 283-285, 409, 421, 422, 424, 

 425, 427^30, 432, 441, 516, 546, 847 



specific acoustic resistance of -, 479 



transverse wave velocity of -, 473 

 Batholith, 427, 437 

 Bauscliinger gauge, 455 

 Bauxite: 



density of -, 79 



- deposits, 51, 417 

 Bayley-Walker extractor, 901 

 Beam: 



gravimeter, 132, 133 



torsion balance -, 11-15, 85-88, 175-199 

 Bearing capacity, 921 

 Bedrock, depth determination of, 502, 625, 

 728, 729, 733, 734, 740-743, 756, 757 



Below method, 155, 236, 237, 238, 268 



Bending tests, 458-460 



Benzenes, 889 



Beryl, density of, 80 



Beta rays and radiation, 871-873, 881, 882 



Bicarbonates, 901, 903 



Bicycle, magnetic effect of, 373 



Bieler-Watson coil and method, 626, 



779, 783, 784, 804, 806 

 Bifilar suspension, 11, 128, 130, 131, 195 

 Binaural effect, 938, 942, 947, 951, 961 

 Biotite gneiss, resistivity of, 660 

 Bismuth, density of, 77 

 Bismuthinite, density of, 77 

 Black sands, 5, 49, 51, 318, 416 

 Blasting caps, 20, 487-489, 494-496, 571 

 Blasting vibrations (see Vibrations, 



blasting) 

 Blastophone, 503 

 Blueground, 56, 419 

 Bodily tides, 163, 164, 929 

 Boiling point, 847, 891, 892 

 Booneville dam, 435 

 Borax, density of, 79 

 Borda equation, 117 

 Bore holes (see Wells) 

 Borings (see Wells) 

 Bornite: 



density of -, 78 



resistivity of -, 657 

 Bouguer anomalies, 142 

 Bouguer reduction, 11, 136, 137, 141, 142, 



147, 152 

 Boulder Dam, 63 

 Boundaries of formations (see Formation 



boundaries) 

 Bourdon tube, 366 

 Bow wave, 507 

 Bricks: 



density of -, 79 



magnetic effects of -, 317, 374 

 Bridges : 



foundations of -, 57, 58, 60 



magnetic effect of -, 373 



strains in -, 928, 930, 933 



vibrations of -, 441, 912, 915 

 Brine, 61, 867, 886 

 Broadcast waves (see Radio waves) 

 Broca tube, 947, 957 

 Brown iron (see Limonite) 

 Brown pendulum, 109, 110, 112 

 Brucite, density of, 78 

 Brunton compass, 352 

 Building materials, 54 

 Buildings: 



magnetic effect of -, 374 



resonance of -, 918, 919 



vibrations of -, 6, 9, 441, 911-913, 915, 

 917-919 

 Bulk density, 74, 75, 77 

 Bulk modulus, 446 

 Buoyancy, 72, 118, 133 

 Buoys, 949, 950 



