>From the wall of the Arno at [the gate of] la Giustizia to the bank of the Arno at Sardigna where the walls are, to the mills, is 7400 braccia, that is 2 miles and 1400 braccia and beyond the Arno is 5500 braccia.
[Footnote: 2. _Giustizia_. By this the Porta della Giustizia seems to be meant; from the XVth to the XVIth centuries it was also commonly known as Porta Guelfa, Porta San Francesco del Renaio, Porta Nuova, and Porta Reale. It was close to the Arno opposite to the Porta San Niccolo, which still exists.]
By guiding the Arno above and below a treasure will be found in each acre of ground by whomsoever will.
The wall of the old houses runs towards the gate of San Nicolo.
[Footnote: By the side of this text there is an indistinct sketch, resembling that given under No.973. On the bank is written the word _Casace_. There then follows in the original a passage of 12 lines in which the consequences of the windings of the river are discussed. A larger but equally hasty diagram on the same page represents the shores of the Arno inside Florence as in two parallel lines. Four horizontal lines indicate the bridges. By the side these measures are stated in figures: I. (at the Ponte alla Carraja): _230--largho br. 12 e 2 di spoda e 14 di pile e a 4 pilastri;_ 2. (at the Ponte S. Trinita); _l88--largho br. 15 e 2 di spode he 28 di pilastri for delle spode e pilastri so 2;_ 3. (at the Ponte vecchio); _pote lung br. 152 e largo;_ 4. (at the Ponte alle Grazie): _290 ellargo 12 e 2 di spode e 6 di pili._
There is, in MS. W. L. 2l2b, a sketched plan of Florence, with the following names of gates: _Nicholo--Saminiato--Giorgo--Ghanolini--Porta San Fredian --Prato--Faenza--Ghallo--Pinti--Giustitia_.]
The ruined wall is 640 braccia; 130 is the wall remaining with the mill; 300 braccia were broken in 4 years by Bisarno.
They do not know why the Arno will never remain in a channel. It is because the rivers which flow into it deposit earth where they enter, and wear it away on the opposite side, bending the river in that direction. The Arno flows for 6 miles between la Caprona and Leghorn; and for 12 through the marshes, which extend 32 miles, and 16 from La Caprona up the river, which makes 48; by the Arno from Florence beyond 16 miles; to Vico 16 miles, and the canal is 5; from Florence to Fucechio it is 40 miles by the river Arno.