chon Lionardo da Vinci a livellare Arno in quello di Pisa per levallo del lilo suo. (Published by MILANESI, Archivio Storico Italiano, Serie III, Tom. XVI.} VASARI asserts: (Leonardo) fu il primo ancora, che giovanetto discorresse sopra il fiume d'Arno per metterlo in canale da Pisa a Fiorenza* (ed. SANSONI, IV, 20).
The passage above is in some degree illustrated by the map on Pl.
CXII, where the course of the Arno westward from Empoli is shown.]
1007.
The eddy made by the Mensola, when the Arno is low and the Mensola full.
[Footnote: Mensola is a mountain stream which falls into the Arno about a mile and a half above Florence.
A=Arno, I=Isola, M=Mvgone, P=Pesa, N=Mesola.]
1008.
That the river which is to be turned from one place to another must be coaxed and not