In the Rhône stands the castle of Roquemaure. They judge that the castle itself belongs to the empire, which has rights over the river, while its estate belongs to the kingdom of France, which owns the land-rights. On the estate of this castle there are vines which the people call "brumestae", producing good fat grapes. These vines flower and produce clusters of grapes as ordinary vines do, but then they cheat their husbandman's expectation: for when it comes to the feast of St John the Baptist June, all the fruit vanishes, and nothing which might have grown into fruit is found on them.