How long a usufruct endures which is granted to a city or town, without mention of any specific time. When the usufrcut of a building, or an estate, or other thing belonging to another person, is granted to a city, or town, the usufruct will endure a hundred years, and no more, if not specific time had been stipulated in the grant; after which it will revert to the owner of the estate, or his heirs. And the reason is, that a usufruct granted expressly to the commons of any place is extinguished by the death of all its inhabitants; for the ancient sages have conceived that after the lapse of a hundred years, all those would be dead who were born at the time the usufruct were granted. And we also say that the usufruct would expire, if the town or place in favor of which it was granted, should be destroyed so that the ground be cultivated on which it stood or the place become a desert. Yet if all, or a part of the inhabitants of such place, afterwards establish themselves in another place they will preserve the usufruct nothwithstanding they had abandoned the soild of the town where they dwelt at the time they acquired the usufruct.