INDEX 



179 



Goteborg, 33, 86, 89, 118, 

 120 



Oceans: age, 13, 15, 17; 

 depth, 8, 10, 21, 25ff., 31, 

 70; future, 24; main physi- 

 cal features, 6-10 



Orogenesis, 78 



Ovey, C, 88 



Pacific Basin, 67 



Parker, Frances, 42 



Peirson, Jean, 42 



Pettersson, Otto, 31 



Philippine Trench, 10, 159f., 

 163, 165 



Phipps, Captain (Lord Mul- 

 grave), 27 



Phleger, Fred, 42, 88, 97f. 



Phytoplankton, 90, 93f. 



Picciotto, E., 88, 120, 124, 

 129 



Piggot, C. S., 33, 116, 118 



Planets: Mars, 4; Venus, 4 



Plankton, 42, 44, 77f., 89, 

 104f., 145. See Phyto- 

 plankton, Zooplankton 



Poole, J., 130 



Protozoans. See Radiolarians 



Puerto Rico Trench, 70 



131; radon, 118; thorium, 



113ff., 129; uranium, 113ff. 



See Radium 

 Radiolarians, 50, 83f., 92f., 



106f., 113, 118, 140 

 Radium, 109, 112ff.; in 



manganese nodules, 85, 



127-8; measurement, 



115ff.; in sea water, 115; 



in sediment, 116ff. 

 Ramsey, Sir William, 114 

 Red day, 30, 50, 52, 60f., 79, 



82, 84, 92, 96, 113, 118, 



123, 144f. 

 Revelle, Roger, 21, 42n., 71, 



105f. 

 Richter, 68 

 Riedel, W. R., 71, 89, 106, 



134, 140 

 Rio Grande Ridge, 7 

 Romanche Channel, 6, 142 

 Romanche Deep, 6, 94f., 



109f., 123, 125f., 127, 



141f. 

 Ross, Sir James Clark, 27 

 Rotschi, H., 71, 88 

 Royal Society of Goteborg, 



33, 37, 43 

 Rubey, William W., 18ff. 



Radioactive elements, 110, 

 112ff.; ionium, 109, 116, 

 120; radiocarbon, 103, 



St. Paul's Rocks, 74, 97 

 Sand, deep-sea, 97f., 148 

 Schott, W., 88, 105 



