320 



INDEX. 



Gravitation alone cannot account 



for sun's heat, 299 



,, alone cannot originate 



suns or nebulae, 300 



Gravity, a cause of descent of 



glaciers, 254 

 Greenland, heat received from 

 the sun, 48 

 ,, coldness of air during 



summer, 84 

 ,, how its ice may be 



removed, 147 

 ,, misapprehensions re- 



regarding, 81 

 ,, why the summers are 



cold, 54 

 ,, free from ice during 



any of the inter- 

 glacial periods, 195 

 ,, Nordenskjold on ab- 



sence of boulders in 

 strata of, 170 

 ,, rainfall and snowfall 



in, 237 

 ,, ice of, 64 



,, whale in Carse-de- 



posits, 116 

 ,, Rink, Heyes, Brown, 



&c, on, 64-66 

 ,, glaciers, high velocity 



of, 239 

 Gulf Stream, influence in distribu- 

 tion of heat, 198 

 ,, absolute amount of 



heat conveyed by, 

 146 



HABENICHT, H., on German 

 inter-glacial beds, 133 

 Haeckel, Prof., on age of the 



earth, 289, cited, 291 

 Hamilton, Sir William, definition 



of Cause, 103 

 Hampshire deposits, 163 

 Haughton, Prof., on change of 

 axis of rotation, 4 



cited, 294, 295 

 Heat of Aerial currents, 23 



, , cut of by the atmosphere, 37 



,, trapped," 45 



,, rays "sifting" of, 44 



Heat evolved by freezing, 45 

 ,, as a cause of glacier motion, 



257 

 , , absolute amount conveyed by 

 Gulf-stream, 146 

 Hedenstrom, M. , on the mammoth, 



179, 181 

 Helix schrencki, 183 

 Helland, Mr. A. , on German inter- 

 glacial beds, 133 



, , on Scandinavian 



ice-sheet, 133 

 ,, on density of ice, 



209 

 , , on rate of motion 



of Greenland 

 ice, 239 

 ,, on thickness of 



ice-sheet of Nor- 

 way, 247 

 Helmholtz, theory of origin of 

 sun's heat, 265 



,, formula of condensa- 



tion of sun's mass, 

 265 

 cited, 282, 290 

 Herschel, Sir W., cited, 309 

 Hessle boulder-clay of Mr. Wood, 

 131 

 ,, not post-glacial, 132 

 Heyes, Dr., on Greenland ice, 64 

 High Land in relation to glaciation, 



85 

 Hill, Rev. E., evaporation in re- 

 lation to glaciation, 23 

 ,, on change of axis 



of rotation, 5 

 , , answer to question, 



57 

 ,, objection con- 



sidered, 46 

 ,, cited, 48 



Hippopotamus in England, 134 

 Hooker, Sir Joseph I)., theory of 

 Antarctic ice, 75 

 ,, on tropical 



plants, 10 

 ,, on Antarctic 



ice, 111 

 ,, cited, 76 



Hopkins, Mr., on internal heat, 2 

 Howorth, Mr., on the mammoth 

 in Siberia, 178 



