The Notebooks of Leonardo Da Vinci Complete


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On the 2nd day of February 1494. At Sforzesca I drew twenty five  
steps, 2/3 braccia to each, and 8 braccia wide.  
[
Footnote: See Pl. CX, No. 2. The rest of the notes on this page  
refer to the motion of water. On the lower sketch we read: 4 br.  
four braccia) and giara (for ghiaja, sand, gravel).]  
(
1
025.  
The vineyards of Vigevano on the 20th day of March 1494.  
[Footnote: On one side there is an effaced sketch in red chalk.]  
1
026.  
To lock up a butteris at Vigevano.  
1
027.  
Again if the lowest part of the bank which lies across the current  
of the waters is made in deep and wide steps, after the manner of  
stairs, the waters which, in their course usually fall  
perpendicularly from the top of such a place to the bottom, and wear  
away the foundations of this bank can no longer descend with a blow  
of too great a force; and I find the example of this in the stairs  
down which the water falls in the fields at Sforzesca at Vigevano  
840  


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