ioo New Theories of the Great Forces. 



or, in other words, that normal electrified 

 hydrogen constitutes water, and that normal 

 diselectrified oxygen produces the same ; or 

 that hydrogen, oxygen, and water are pre- 

 cisely the same, differing only in degree of 

 electrification. 



Sun-heat. 



7. (Page 41.) "The sun, as the main 

 source of heat and light, must be able to call 

 forth and animate magnetic forces on our 

 planet/' HUMBOLDT. 



" It is an incontestable fact that the sun 

 exercises an action upon the magnetic phe- 

 nomena which are manifested upon our 

 globe." SECCHI. 



" What is certain is, that there ought to be, 

 between the sun and planets, a means of com- 

 munication of force, and the transmission of 

 movement/' Ibid. 



" The central body may, as a powerful 

 source of heat, excite magnetic activity on 

 our planet." HUMBOLDT. 



8. (Page 42.) " It cannot be doubted that 

 electro-magnetic currents exist in the interior 

 of the globe." AMPERE. 



" The internal heat of our planet is con- 



