Tasman, Abel, 38, 39 



Tasman Basin, 180; . . . Sea, 7, 180 



Tasmania, 40, 43, 49, 55 



Taurus Mts., 131, 133 



Taymyr Strait, 59, 60 



Television, underwater, 192 



Telo, 138 



Temperature of sea; Atlantic Ocean at 

 4,000 m, 209; long-term changes, 179; 

 ranges and measurement, 177-9, 212; 

 seasonal changes, 179 



Tenerife, 29, 30 



Ternate, 28 



"Terra Australis Incognita," 36-7 



"Terror," H.M.S.,49ff, 177; collision with 

 Erebus, 52-3; engined for Franklin's 

 expedition, 53 



Thabracca, 138 



Thermal energy, from the sea, 240 



Thermometers, pressure error in and 

 compensation, 178-9 



Thompson, J. Vaughan, 92 



"Thor," Danish research ship, 79 



Throckmorton, Peter, 135, 168 



Thucydides, 135 



Thule, 21, 24, 25; speculation on identity 

 of, 24 



Thyboroen, Denmark, 228 



"Thyra," route of, 60 



Tiberius, Baths of, 141, 143 



Tidal bores, 219-22, 220-1 ; . . . channels, 

 231 ; currents, 227; ... energy, 241 



Tidal waves, 222 



Tide gauge, 215 



Tides, 214ff; bores, 219-20; disasters in 

 Holland and England, 1953, 222; diur- 

 nal, 215; eventual fate of tides, 223; 

 friction effect on earth's rotation, 223; 

 impact on Mediterranean peoples, 

 214; in estuaries, 219; influence of 

 sun and moon on, 215-6, 222; oscil- 

 latory, 217; ports, effect on, 218; range 

 in various places, 215; semidiurnal, 

 215,217; source of power, 241 ; springs 

 and neaps explained, 216; surges, 

 222; tidal waves, 222; tsunamis, 222 



Tidore, Molucca Is., 35 



Tierra del Fuego, 29, 33, 36-8 



Tigris, R., 12, 131 



Tillamook Lighthouse, 228 



Timaeus, 20 



Timor Island, 28; ... Sea, 7, 180 



Tingis, 130 



Tin industry, British, as seen by Pytheas, 

 23 



Tinned stores, on 1839 Antarctic trip, 49; 

 failed Franklin, 54 



"Titanic" disaster, 1912, 210 



Todos los Santos, see Magellan Strait 



Tolmeta, 138 



Tonga I., 42, 43, 44, 116, 117; .. . Trench, 

 180 



Tordeslllas, Treaty of, boundary line of, 

 29 



Torres Strait, 40, 43 



Toulon, see Telo 



Townships, sites of ancient in Mediler- 

 ranean, 138-9 



Trade, as an encouragement to discov- 

 ery, 18; between ancient Egypt and 

 Punt, 128 



Trade goods, 30 



Trade winds, as generators of ocean 

 currents, 206 



Trafalgar, Battle of, 46 



"Travailleur," French survey ship, 118 



Trawling, in ocean research, 177 



Traz-os-Montes, dist., Portugal, 26 



Trent, R., tidal bore in, 219, 220 



"Trent," ship of Sir John Franklin, 1848, 

 46 



"Trieste," bathyscaphe, 199 



"Trigger," U.S.S., 68 



"Trinidad," Magellan's ship, 30, 35; bro- 

 ken up, 28, route of attempted return, 

 28 



Tripoli, 138 



Trireme, interpretation of the term, 132 



Tristan da Cunha, 116, 197 



Trojan War, 128 



Tromso, 60, 65 



Trondheim, 60 



Troy, 131, 139 



Tsunamis, 222-3 



Tuamotu Archipelago, 42, 116; . . . Ridge, 

 180 



Tunis, 99, 162 



Tunisia, 98, 162 



Tunnelling-lance, 137 



Tunnels, ancient Roman, 141 



Tunny, 98-9 



Tupia, Tahitian chief, friend to Capt. 

 Cook, 40 



Turbidity currents, 195-6 



Turris LIbisanis, 138 



Turtles, 89 



Tyre, 128, 131, 139, 150-3, 159 



Tyrrhenian Sea, 138 



Ulladulla Trough, 180 



Ultrasonic signals, 192 



Ultraviolet tracers, 230 



Umiak, Eskimo craft, 18 



Umivik, Greenland, 57 



Unalga Pass, Aleutians, 218 



Undertow, 226 



Unfortunate Islands, see Marquesas 



"United States," liner, 219 



Upwelling, regions of, 210 



Ural Mts., 59 



Urchin, sea, 84, 196 



Ur, site of, 12 



Urville, Dumont d'. Admiral, 51, 178, 179 



Ushant, 21 



Utica, 126, 130, 133, 138, 153 



"Valdivia," German survey ship, 119-20 

 Valencia, see Saguntum 

 Valparaiso, 116 

 Vanadium, 238 



287 



