INDEX 



447 



Moscow, 408 



Munich, 408, 409, 410, 418 



Nichols, E. H., 412 

 Nippoldt, A., 372 



Obsen-ations, Atmospheric-Electric, Cruise III, Galilee, 

 364-366; Cruises I-III, Carnegie, 366-^75; Cruise IV, 

 Carnegie, 376-422; specimens, 397-401; tables and dis- 

 cussion of results (Cruise IV), 402-422 

 Observing House, on the Carnegie. .379; pi. 22 

 Ossiarhersee (Carinthia), 409 



Pacific Ocean, obsenations over, 364-366, 369-372, 403-407, 

 410-422; smalluess of radioactive content over, 364, 

 369, 371, 372, 413-414 

 Pacini, 410 



Peebles (Scotland), 409 



Penetrating Radiation, for Carnegie's Cruise IV, 389, 403- 

 407, 412. 422; diurnal variation of, 407, 40S, 417; annual 

 variation of, 421 ; specimen forms for recording, 399, 401 ; 

 instruments, pi. 22 

 Perpignan, 410 



Peters, W. J., 361, 364, 366, 369 



Potential-gradient, for Galilee's Cruise III, 364; for Car- 

 negie's Cruise II, 369, 370; for Carnegie's Cruise III, 

 372-374; for Carnegie's Cruise IV, 380-382, 403-407, 

 410, 422; diurnal variation of, 407, 408, 416^120, 422; 

 annual variation of, 373, 374, 420, 421; reduction factor 

 for, 364, 372, 382, 407; sources of error in, 380-382; 

 specimen forms for recording, 397, 401; collection of 

 miscellaneous values of, 410; instruments, pi. 22 

 Potsdam, 408, 409, 410, 418 



Radioactive Content of Atmosphere, for Galilee's Cruise III, 

 364; for Carnegie's Cruise I, 368; for Carnegie's Cruise 

 II, 370; for Carnegie's Cruise III, 373, 374, 375; for Car- 

 negie's Cruise IV, 390-396, 403-407, 413, 414, 422; 

 dependence upon proximity to land, 364, 368, 369, 371, 

 372, 375, 413, 414; effect of, on conductivity, 371, 374, 

 375, 415, 416; presence of thorium emanation, 369, 375; 

 specimen forms for recording, 400, 401; instruments, 

 pi. 22 

 Radioactive Content of Sea-Water, for Galilee's Cruiae III, 



365; for Carnegie's Cruise IV, 396 

 Red Sea, 410 



Reykjavik, determination of reduction factor for potential- 

 gradient, 372 



Rowland, 363 

 Rucker, Arthur, 363 

 Saake, W., 413 

 St. Gilgen (Salzburg), 409 

 Salpeter, J., 393 

 Salzburg, 408, 409 

 Samoa, 418 

 Schuster, Arthur, 363 

 Schweidler, E. von, 408, 409. 414, 418 

 Seeham (Salzburg), 408, 409 

 Seewalchen (upper Austria), 408, 409 

 Sensel, von, 408 

 Shaw, 363 

 Simla (India), 409 



Simpson, G. C, 372, 373, 382, 386, 408, 409, 410, 412, 413, 

 417-420 



Sowers, D. C, 364 



Specific Ionic Velocity, for Carnegie's Cruise III, 375; for 

 Carnegie's Cruise IV, 389, 403-407, 411, 412, 422; effect 

 of Langevin ions upon, 412; specimen forms for record- 

 ing, 398, 401 ; collection of miscellaneous values of, 409 



Specimens, obser\'ations and computations, 397-401 



Speranski, 408 



Sub- Antarctic Oceans, observations over, 405-407, 410-422; 

 smallnesa of radioactive content over, 413-414 



Summary of Conclusions, 422 



Swann, W. F. C, 361, 363, 369, 372, 373, 377, 380, 381, 384, 

 387, 389, .390. 394, 414, 418 



Swinemilnde, 408 



Terrestrial Electricity, defined, 362 



ThaUer, 409 



Triest, 410, 418 



Vienna, 408 



Wagner, 408 



Widmer, J. A., 363 



Wiechert, 363 



WUson, C. T. R., 409, 412 



Wise, D. M., 363, 392 



Wolfenbuttel, 413 



World Work, requirements of, 361, 362 



Wright, C. S., 382, 386, 410, 412, 413, 417, 418, 420 



Wulf, 378 



Zeleny, 412 



