The number of monastic institutions in the island is very small.
By his exposition of the political history of the kingdom, based on a study of its laws and institutions and of the legal conflicts between the state and the court of Rome, Pietro Giannone was the initiator of what has been since known as civil history.
Its public institutions include tribunals of first instance and of commerce, a council of tradearbitrators, a chamber of commerce and a branch of the Bank of France.
An agricultural loan and credit company has been formed on the ruins of the former institutions, but hitherto no charter has been granted it.
Institutions possessing a special character are the monti frumentarii, public grain deposits, founded for the purpose of supplying peasant proprietors with seed corn, debts being paid in kind with interest after harvest.