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sasters No planet will be broken by any comet in its 

 path; no comet will ever destroy the sun; mankind will 

 never perish from cosmic cold on Earth, or Jupiter or 

 Saturn; though, of course, the inhabitants of different 

 planets must differ in many respects themselves. On 

 Jupiter and Saturn where the day is more than three 

 times shorter people are probably three times more ac- 

 tive and evolved, though their stature is far smaller than 

 hat of men on earth. 



The history of mankind is a convincing picture of 

 the same progressive order. Aboriginal antedeluvian 

 man was a man of bone ; man in the epic age was a 

 muscular creature; now we are entering upon the ner- 

 vous age. Muscle resigns its place as a subordinate if 

 not wholly unnecessary factor in an era of steam, hy- 

 draulics and electricity. With the fuller development of 

 electricity as a motive force the mightiest in nature, man 

 will pass through the age of brain. The further course 

 of life Heaven only can foresee, but one supposes that 

 the time will come when cosmic terrestrial evolution 

 will reach its apogee ; a time when humanity will form 

 no longer a needful factor and the renowned apostolic 

 prophecy will be fulfilled "the present earth shall be 

 renewed with fire" while the mighty monarch man, in 

 reality the worm and slave of all-powerful nature, will 

 cease to be - - resigning his place on earth to higher 

 cosmic powers. 



With this I bring to an end my remarks on the ge- 

 neral scheme of the solar systems and starry worlds 

 with the expression of my gratitude to all the physicists, 

 chemists, geologists and astronomers, for all the know- 

 ledge they have gained by their laborious researches in 

 heaven and earth. Their's has been exceptional labour; 

 the laws they have revealed are changekss and ever- 

 lasting, and we little gods must involuntarily obey these 

 laws. Without any fatuous philosophical fictions, we 

 shall do well to govern our own human life in accor- 



