Vi., 1838); Christine de Pisan, Le Livre des fais et bonnes me urs du sage roy Charles V, written in 1404, ed.
The hill occupied by the Pisan fortifications and the medieval town within them must have been the acropolis of the Carthaginian settlement; it is impossible to suppose that a citadel presenting such natural advantages was not occupied.
At the Marchese's request he wrote, in 1588, a treatise on the centre of gravity in solids, which obtained for him, together with the title of "the Archimedes of his time," the honourable though not lucrative post of mathematical lecturer at the Pisan university.
In 1062 the Pisan fleet broke through the chain of the harbour and carried off much spoil, which was spent on the building of the great church of Pisa.
To this succeeded the Moral Proverbs of Christine de Pisan, in verse, in 1478, and a Cordial, in prose, in 1479.