Plan of canal lock-basins and a defensive earth embankment
Lock-basins and a feeder canal level with the ditch banks, and an embankment a b as a shield against nearby towers
A ground plan notes three canal lock-basins — of the Popiole (poplars), of the Misalia, and of the ditch — together with a feeder canal that leaves the basin of the Popiole and runs level with the bank of the ditches. A framed inset marks a line a b and defines it as an embankment, always built up with earth thrown toward the ditches, so as to serve as a shield against the assault of the neighbouring towers. The page thus joins the management of water with military earthworks, and the leaf carries further pen studies.
On this page
Three lock-basins and a feeder canal
The plan lists three conche (lock-basins): of the Popiole, of the Misalia, and of the ditch. A canal leaves the basin of the Popiole and is kept level with the bank of the ditches.
Embankment a b as a shield against enemy towers
In a framed inset the line a b is defined as an embankment, always built with earth thrown toward the ditches, so that it forms a shield against the assault of the nearby towers.