The criminal and political prisons were under the special supervision of the Doge himself during the first half of the fourteenth century, and it was the duty or two or his counsellors to visit them once every month, and to make inquiry of the prisoners confined there concerning their wants and wishes. During the second half of the century this supervision and the duty of visiting became a part of the office of the heads of the Ten. I shall attempt to describe in passing the state of the prisons in which criminals and persons accused of grave crimes were confined in the fourteenth century, these only having been under the supervision of the Ten. [Sidenote: _Rom. iii. 74._] [Sidenote: _Mutinelli, Less._] [Sidenote: _Rom. iii. 77._] In the first place, there were certain narrow but not unhealthy prisons in the tower which formerly existed at the east end of the ducal palace, and these were on the same floor as the hall where the Council of Ten met, and were called the ‘upper’ prisons. Accused persons were generally kept here during their trial. In 1321 an order was issued for the construction of the so-called ‘Lower’ prisons, which the common people afterwards called ‘pozzi,’ wells; and these were undoubtedly hideous and narrow cells, though probably not worse than those in use at that time in other countries. They are not below the level of the ground, or rather of the water, as novelists have described them; but the fact that criminals descended to them from the hall of the tribunal by means of a little staircase less than a yard wide, which soon became quite dark, and the sound of the lapping water outside, helped to give the prisoner the impression that he was being taken down alive into a tomb dug deep in the earth, although he was actually on the level of the courtyard. A small door in the wall of the courtyard was opened in 1407, in order that the family of Vittor Pisani might enter the prison when he was lying there ill, and it was afterwards closed at his expense. On the side of the canal was a [Sidenote: _Rom. iii. 75._]