324 



INDEX. 



Physical theory, why so named, 92 

 ,, recognises geo- 



graphical con- 

 ditions, 93 

 „ points of agree- 



ment, 95-97 



Pisidium fontinale, 1 84 



Planets, elements of, 308 



Planorbis albis, 183 



Polar regions, mild climates ex- 

 ceptional in, 171 



Poisson, M. , on cause of geological 

 climate, 2 



Prevost's theory of exchanges, 31 



Prince Patrick's Island, wood 

 found at, 193 



Provence, tufa of, 188 



Pouillet, M. , on temperature of 

 space, 259 



Pouillet and Herschel on tempera- 

 ture of space, 144 



Poles, heat received to that at the 

 Equator, 143 



Polar regions, glaciation, normal 

 condition, 171 



RADIATION of a particle, 22 

 ,, of heat through 



plates, Professor 

 Balfour Stewart 

 on, 261 

 ,, effect of, on sur- 



face of ice-sheets, 

 217 

 Rae, Dr. , on mammoth in Siberia, 



191 

 Raised beach with moraine matter 



on, 116 

 Ramsay, Prof, A. C, on great 



faults in North Wales, 268 

 Reaction of the physical agents, 



54, 120 

 Reade, Mr. Mellard, cited, 279 

 Regelation, three theories of, 249 

 ,, theory of, from 'Cli- 



mate and Time,' 251 

 "Rejoinder," Prof. Newcomb's, 



31, 32, 34 

 Rhinoceros tichorhinus, 180 

 Rink, Dr., on Greenland ice, 64 

 ,, on rainfall and snow- 



fall in Greenland, 

 237 



Rink, Dr., cited, 48 

 Rock-basins, how excavated by 



land ice, 254 

 Rogers, Prof. H. D., on fault in 



the Appalachians, 270 

 Ross, Sir John, on snowfall of 

 Antarctic regions, 

 79 

 , , on absence of water 



on Artarctic ice- 

 sheet, 218 

 Ruprecht, Herr von, on Siberia, 



182 

 Russia, mammoth remains found 

 in, 186 



SANDWICH Land under glacia- 

 tion, 113 

 Sannikow on former climate of 



Siberia, 182 

 Saporta, M., on tufa, 188, 189 

 Schmidt on deposits on the Tundra, 



182 

 Scoresby, Capt., on Greenland, 69 

 ,, on coldness of" 



Greenland air, 

 84 

 Scotland, inter-glacial beds of, 130 

 Sea, temperature higher than that 

 of land, 26 

 ,, mean temparature, why it is 

 high? 26-31 

 Sea-level, oscillations of, 139, 140 

 Secular cooling of the earth, Sir 



W. Thomson on, 295 

 Shaler, Prof., theory of Antarctic 

 ice, 76 



,, on Antarctic ice, 



111 

 Shells in Tufa, 190 

 Siberia, why snow is not per- 

 petual, 88 

 ,, mammoth in, 178 

 , , inter-glacial period of, 190 

 ,, North warmer during 



mammoth epoch, 180 

 ,, wood found in, 181 



Siemens, Dr., theory of the sun, 



298 

 "Sifting" of rays, 44 

 Skeletons of mammoth in Europe, 

 186 



