INDEX 



Abyssal area, 230 



Age ol the Earth, 52 



Algae, 139-151 



Alkalinity of sea- water, 50, 61 



Anabolism, 162 



Animals, marine, 157-193 



Aphotic or deep-aea zone, 137 



Apparatus for marine research, 



12-12, Plate I. 

 Arctic Ocean, depth of, 34 

 Area of land, 24 

 Area of ocean-floor, 24-26 

 " Artificial bottom," 138, 176, 177 

 Atlantic Ocean, depth of, 28, 32 

 " Atlantis," 237 

 Atmosphere, 133, 227, 228 



Bacteria, 64, 151-156, 162, 169 

 Banks, submarine, 29, 33, 34, 42, 



108 

 Barium nodules, 197, 222 

 Benthos, 139, 169, 173-186 

 Bipolarity, 165, 180, 186-193 

 Black Sea, 35, 59, 60, 62, 63, 64, 



92 98 

 Blind fauna, 171, 179 

 Blue mud, 201, 202-203, 213 



Calcium carbonate, 61, 64, 196, 



197, 214-221 

 Centrifuge, 17, 148 

 Centrosphere, 23, 239, 240-243 

 Cetacea, bones of, 232, 283 

 " Challenger " Expedition, 10, 14, 



15, 16, 20, 42, 49, 71, 72, 98, 



99, 121, 147, 148, 164, 166, 181, 



182, 185, 186, 188 

 Circulation, oceanic, 115-132 

 Circulation, vertical, 127-132 

 Coccoliths, 148 

 Coccospheres, 148 

 Colour of sea-water, 101-102 

 Colours of marine animals, 168, 



169, 178 

 Compressibility of water, 94-95 

 Continental area, 230 

 Continental blocks, 236, 238, 240 

 Continental edge, 32 

 Continental shelf, 30, 31, 176, 213, 



230 

 Continental slope, 31, 230 

 Coral mud, 201, 202, 205, 213 

 Coral reefs, 166, 215 

 Coral sand, 205 



Cogmic spherules, 210, 223, 232, 233 



Current-measurements, 21 

 Currents flowing out of Mediter- 

 ranean, 59-60 



" Dead water," 114 



Deeps, 27 



Deep-sea deposits, 201 



Densimeter, 22 



Density, 21, 22, 115, 116, 117, 118 



Deposits, 194-225 



Depth, 23-44 



Diatom ooze, 146, 201, 208, 209, 



212, 213 

 Diatoms, 142-146, 161 

 Direct development, 163 

 Dredge, 15, 181, 184, 185, 186 



Electrical conductivity of sea- 

 water, 55 



Elevations, submarine, 29, 33, 

 34, 42, 108 



Enclosed seas of N.W. Pacific, 40 



Eyes, 167, 171, 172, 179 



Fisheries, 177 



Floating apparatus, 143, 144, 167 



Food of marine animals, 133, 134, 

 142, 161, 163, 177, 179, 185 



Foraminifera, 148, 149, 160, 166 



Freezing of sea-water, effect on 

 salinity, 51 



Freezing point, 66, 67 



Gases in sea-water, 45, 60-64 

 Geospheres, 226-243 

 Gibraltar Strait, 36, 59-60 

 Glauconite, 61, 197, 214, 221-222 

 Globigerina Ooze, 201, 205-207, 



209, 212, 213, 224 

 " Gondwanaland," 237 

 Gravitational attraction of land, 



24 

 Green mud, 201, 204, 205, 213 

 Green sand, 204 

 Gulf weed, 140, 141 



Heteropods, 160, 165 

 Historical notes, 7-12 

 Hydrometers, 22 

 Hydrosphere, 133, 228 

 Implosion, 97, 98, 99 

 Indian Ocean, depth of, 28, 37 

 Ions, 49 



Katabolism, 162 



253 



