XIV CONTENTS. 



GENERAL REVIEW OF NATURAL PHENOMENA. 



PU*. 

 Connection between the Material and the Ideal World ......... 80 



Delineation of Nature ..................................... 82 



Celestial Phenomena ..................................... 83 



Sidereal Systems ......................................... 89 



Planetary Systems ....................................... 90 



Comets ................................................ 99 



Aerolites ............................................... -Ill 



Zodiacal Light .......................................... 137 



Translatory Motion of the Solar System ................... 145 



The Milky Way ........................................ 150 



Starless Openings ........................................ 152 



Terrestrial Phenomena .................................... 1 54 



Geographical Distribution ................................. 161 



Figure of the Earth ...................................... 163 



Density of the Earth ..................................... 169 



Internal Heat of the Earth ................................ 172 



Mean Temperature of the Earth ........................... 175 



Terrestrial Magnetism ................................... 177 



Magnetism ............................................ . 183 



Aurora Borealis .......................................... 193 



Geognostic Phenomena ................................... 202 



Earthquakes .................. . ......................... 204 



Gaseous Emanations ..................................... 217 



Hot Springs ............................................. 221 



Salses .................................................. 224 



Volcanoes .............................................. 227 



Rocks .................................................. 247 



Palaeontology ............................................ 270 



Geognostic Periods ....................................... 286 



Physical Geography ...................................... 287 



Meteorology ............................................ 311 



Atmospheric Pressure ..................................... 315 



Climatology ............................................. 317 



The Snow-line .......................................... 329 



Hygrometry ............................................ 332 



Atmospheric Electricity .................................. 335 



Organic Life . . .* ................... ' ...................... 339 



Motion in Plants ......................................... 341 



Universality of Animal Life ............................... 342 



Geography of Plants and Animals .......................... 346 



Floras of different Countries ......................... ...... 350 



Man ................................................... 352 



Races .................................................. 353 



Language .............................................. 357 



Conclusion of the Subject ............................... 35$) 



