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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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