The Notebooks of Leonardo Da Vinci Complete


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9
69.  
That many springs of salt water are found at great distances from  
the sea; this might happen because such springs pass through some  
mine of salt, like that in Hungary where salt is hewn out of vast  
caverns, just as stone is hewn.  
[Footnote: The great mine of Wieliczka in Galicia, out of which a  
million cwt. of rock-salt are annually dug out, extends for 3000  
metres from West to East, and 1150 metres from North to South.]  
IV.  
OF RIVERS.  
On the way in which the sources of rivers are fed.  
9
70.  
OF THE ORIGIN OF RIVERS.  
The body of the earth, like the bodies of animals, is intersected  
with ramifications of waters which are all in connection and are  
constituted to give nutriment and life to the earth and to its  
creatures. These come from the depth of the sea and, after many  
revolutions, have to return to it by the rivers created by the  
793  


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