[IDEM libro septimo decimo ad edictum. ] §8.4.2.prDe aqua per rotam tollenda ex flumine uel haurienda, uel si quis seruitutem castello imposuerit, quidam dubitauerunt, ne hae seruitutes non essent: sed rescripto imperatoris Antonini ad Tullianum adicitur, licet seruitus iure non ualuit, si tamen hac lege comparauit seu alio quocumque legitimo modo sibi hoc ius adquisiuit, tuendum esse eum, qui hoc ius possedit.
[THE SAME, On the Edict, Book 17] Concerning the drawing of water from a river by means of a wheel, or the ladling of it, or if anyone has imposed a servitude on a water-tower, some have doubted whether these might not be servitudes; but in a rescript of the Emperor Antoninus to Tullianus it is added that, even if the servitude was not valid by law, yet if he acquired it under this terms or by any other lawful method for himself, he who has possessed this right is to be protected.