The Notebooks of Leonardo Da Vinci Complete


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over which the running water falls for a height of 50 braccia.  
1
028.  
Stair of Vigevano below La Sforzesca, 130 steps, 1/4 braccio high  
and 1/2 braccio wide, down which the water falls, so as not to wear  
away anything at the end of its fall; by these steps so much soil  
has come down that it has dried up a pool; that is to say it has  
filled it up and a pool of great depth has been turned into meadows.  
Notes on the North Italian lake. (1029-1033)  
1
029.  
In many places there are streams of water which swell for six hours  
and ebb for six hours; and I, for my part, have seen one above the  
lake of Como called Fonte Pliniana, which increases and ebbs, as I  
have said, in such a way as to turn the stones of two mills; and  
when it fails it falls so low that it is like looking at water in a  
deep pit.  
[Footnote: The fountain is known by this name to this day: it is  
near Torno, on the Eastern shore of Como. The waters still rise and  
fall with the flow and ebb of the tide as Pliny described it (Epist.  
IV, 30; Hist. Nat. II, 206).]  
841  


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