326 



INDEX. 



Switzerland, " Flysch" of, 173 



,, illustration from ice 



of, 245 

 ,, glaciers, temperature 



determined by pres- 

 sure, 222 



TAIT, Prof., on age of the sun, 

 266. 

 ,, on nebula, 310 



Tay Valley, Carse-clays of, 115 

 Temperature of space, bearing on 

 terrestrial phy- 

 sics, 258 

 ,, Prof. Langley on, 



20 

 , , an important factor, 



19 

 ,, mean of ocean, 



reason why it is 

 high, 26-31 

 ,, of ocean greater 



than that of land, 

 26 

 Temporary stars, why so rare, 315 



,, causes of, 315 



Terrestrial physics , most important 



problems in, 1 

 Tertiary period, influence of eccen- 

 tricity during, 

 157 

 ,, as affected by ec- 



centricity, 160 

 ,, evidence of glacia- 



tion in, 172 

 Tertiary fossil floras, Mr. J. Starkie 

 Gardner on, 161 

 ,, glacial epochs, 164 

 Thermodynamics, misapprehen- 

 sions regarding, 33 

 Thomson, Prof. James, on cause 

 of regelation, 250 

 , , on lowering of melt- 



ing point of ice, 

 215, 227 

 cited, 203 

 formula, 227 

 Thomson, Sir William, on internal 

 heat, 2 

 ,, theory of several 



climates, 6 

 ,, on mild Arctic cli- 



mates, 148 



Thomson, Sir William, on age of 

 earth, 292 

 ,, cited, 14 



,, on underground 



heat, 213 

 Thomson, Sir Wyville, on Ant- 

 arctic regions, 69- 

 73, 203 

 ,, on Antarctic ice- 



bergs, 70-74 

 ,, on thickness of 



Antarctic ice- 

 sheet, 225 

 ,, on thickness of ice- 



bergs, 209 

 ,, on stratification of 



Antarctic ice, 229 

 ,, on Antarctic ice- 



cap, 232 

 Tidal retardation, argument from, 



292 

 Torrell, Prof., on German inter- 

 glacial beds, 133 

 Tournoner, M., on shells, 190 

 Towson, Mr., on icebergs of 

 Southern Ocean, 207 

 ,, cited, 211 



Tropical and Arctic floras, Mr. J. 

 S. Wood on commingling of, 162 

 Tufa, Prof. J. Geikie on, 187 

 ,, Mr. Howorth on, 188, 189 

 ,, of Provence, 188; of Moret, 

 188; of Canstadt, 189; 

 of Le Celle, 189 

 ,, of Europe, 187 

 ,, mollusca of, 190 

 ,, of Tuscany, 188 

 Twisden, Rev. J. F., on changes 

 of axis of rotation, 5 

 cited, 294 

 Tyndall, Prof., experiments on 

 passage of heat through 

 ice, 252 

 , , experiments on heat-absorb- 

 ing power of aqueous 

 vapour, 260 



UNDERGROUND heat, 214 

 ,, in re- 

 lation to Antarctic ice-sheet, 

 225 

 Undo littoralis, 131, 134 



