698 



INDEX. 



Thoroddsen, Mr. T., On 

 Ice Around Iceland, 446 



Thoulet, M. J., On tlie 

 Arctic Current and Gulf 

 Stream, 421 



Three Chimneys Rocks, 

 611 



Three Points, Cape, Cur- 

 rents, 330 



Tiarks, Dr., On Longitude 

 of Falmouth, 12 ; On 

 Longitude of Funchal, 

 47 



Tides, The, with a Tide 

 Table, 271—298. 

 (217) Cause. (218) The 

 Action of the Moon. 

 (219) Action of the Sun. 

 (220)Height of the Tidal 

 Wave. (221) Equinoc- 

 tial Tides. (222, 223) 

 Dr. Whewell's & Sir J. 

 Lubbock's Observa- 

 tions. (224) The Tidal 

 Wave. (225) Velocity 

 of the Tidal Wave. 

 (226) Time of Slack 

 Water. (227) The Es- 

 tablishment and Cor- 

 rected Establishment of 

 the Port. (228) Semi- 

 menstrual Inequalitv. 



(229) Age of the Tide. 



(230) Difference of the 

 Two Diurnal Tides. 



(231) Height of Mean 

 Water Level. (232) 

 Variations due to Atmo- 

 spheric Pressure. (233) 

 Tidal Currents, & Direc- 

 tion and Rate of Pro- 

 gress of the Tidal Wave. 

 (234)Observations made 

 on Atlantic Coasts, in 

 1834 and 1835. (235) 

 Explanation of the Tide 

 Tables. 



Tide Table, 278—284; 

 Remarks on, 284-293 

 Tides :— 



Africa, West Coast, 290 



Bahamas, 293 



Biscav, Hav of, 290 



Bristol ChanneJ, 287 



Chepstow, 287 



Dover, 463 



English Channel, 285 — 

 286, 462 — 463 



Florida, 293 



Fundy, Bay of, 292 



Gettysburg Bank, 290, 

 605 



Gibraltar Strait, 290 



Gorringe Bank, 290, 605 



Havre, 290 



Nantucket, 292 



Newfoundland. 290 



(Tides — continued.) 



St, George's Channel, 



288—289, 467, 470 

 St. Lawrence River, 291 



—292 

 Southampton, 286 

 Thames, River, 284 

 United States, 292—293 

 Tofirio, Don Vicente, 



Surveys, 34, 45 

 Tornados, 261— 2G1. 

 (207) General Descrip- 

 tion, & Comm. Bourke's 

 Remarks. (208) Capt. 

 Toynbee's Remarks. 

 (209) Remarks by Dr. 

 A. Borius. See, also, 

 pages 124, 160, 161, 162, 

 166,167,217,261—264, 

 570 

 Tortola Island, 357 

 Tortugas Bank, Currents, 



372 

 Tory Island, 469 

 Town, Mr., On Currents 

 of Colombian Coast, &c., 

 363 

 Toynbee, Captain H., On 

 Buys-Ballot's Law, 113 

 — 115 ; On Areas of 

 High and Low Baro- 

 metric Pressure, 115 — 

 116 ; Meteorology of 

 the Equatorial Region, 

 128 ; On Trade Winds, 

 136 — 140 ; On the 

 Equatorial Calms, 155 

 — 156; Examination of 

 Eight Logs kept by 

 Capt. Martyn, between 

 the Channel and New 

 York, 177—178 ; On 

 Cyclonic Wind Systems, 

 183 ; On Westerly tiales, 

 188 ; Storms Crossing 

 the Atlantic, 190—196 ; 

 On Storms of the Bri- 

 tish Isles, 198 ; On 

 Hurricanes, 218 ; On 

 Squalls, 260 ; On Tor- 

 nados, 262 ; On Guinea 

 Current, 332 ; On Equa- 

 torial Currents, 345 ; 

 On Approaching and 

 Crossing the Equator, 

 475 — 476, 481—492,495 

 — 499 ; On Storms of 

 the Northern Atlantic 

 Ocean, 545 — 546 ; On 

 Cloud Motion, 658 

 Tracks — See Passages. 

 Trade Wind, The, 124, 

 128—140. 



(47) Area of Region. 



(48) The Sources of 

 Statistics. (49) Mean 

 Barometric Pressure, 



(Trade Wind — continued.) 

 Direction, and Duration 

 of N.E. and S.E. Trade 

 Winds compared. (50 — • 

 52) Force or Velocity. 



(51) Sailing Tracks 

 through Trade Winds. 



(52) Variation in the 

 Strength. (53) Area and 

 Northern Limit. (54) 

 Southern Limit, with 

 Table of Equinoctial 

 Limits of N.E. and 

 S.E. Trade Winds. 

 (55) Equatorial Belt of 

 Calms. (56) Direction 

 of N.E. Trade. (57-.59) 

 Duration and Direction 

 of N.E. Trade Wind, 

 with Diagrams. (60) 

 Calendar Seasons. (61) 

 Summary by Commr. 

 Maurv. (62) Captain 

 Toynbee's Monthly Re- 

 marks on N.E. and 

 S.E. Trade Winds. 



(63) Atlantic Islands. 



(64) Winds of the West 

 Indies. (65) Jamaica. 



(66) Cayman Islands. 



(67) Bahama Islands. 



(68) Bayamo Squalls. 

 (69—74) Coasts of the 

 Caribbean Sea and Gulf 

 of Mexico. (70-73) Vera 

 Cruz. (71, 72) The 

 Norths. (74) Gulf of 

 Mexico, North Coast. 

 See, also, pages 99, 

 124. 



Travesia, The, 211 



Trcfzarthen Rock, 609, 

 610, 611 



Trondhjem, 22 



Truxton, Commodore, On 

 the Gulf Stream, 401 



Tudor, Mr. E. O., Surveyg, 

 37 



Tulloch Rocks, 574, 606, 

 611 



Turner, Mr., On the Sar- 

 gasso Sea, 340 



Tuskar Rock, 473 



Typhoons, 217 



Ugarte Shoal, 604, 611 

 Under-Currents, 646 

 Uniform Tracks for 



Steamers, 557 — .")(>2 

 United States Coast. Po- 

 sitions, 66 — 75 ; Tides, 

 283—284, 292—293 ; 

 Currents, 439 — 441) 

 Ushant, 477, 478 



Vache Island, 534 

 Valentia Harbour, 17, 



18 



