THE CENTURY'S PROGRESS IN METEOROLOGY 



And one speculator of the time took a step even more 

 daring, urging that the aerolites were neither of telluric 

 norselenic origin, nor yet children of the sun, as the old 



A METEOUIC STONE 



Greeks had, many of them, contended, but that they 

 are visitants from the depths of cosmic space. This 

 bold speculator was the distinguished German pl^sicist 

 Ernst F. F. Chladni, a man of no small repute in his 

 day. As early as 1794 he urged his cosmical theory 

 of meteorites, when the very existence of meteorites 

 was denied by most scientists. And he did more : he 



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