Digestorum libri
Ex libro XVII
Marcellus, Digest, Book XVII. Where anyone builds a house on a lot in which some other person has the usufruct, and the house is removed before the expiration of the time within which the usufruct will be terminated, the usufruct must be restored; in accordance with the opinion of the ancient authorities.
Marcellus, Digest, Book XVII. Where a party who owns an estate entitled to a right of way over neighboring land sells a portion of the same adjoining the servient estate, but does not impose the servitude, and before the prescribed time by which a servitude is lost has elapsed, again acquires the portion which he sold, he will be entitled to the servitude which his neighbor owed.
Marcellus, Digest, Book XVII. A man who purchased a tract of land from another in good faith afterwards leased the same land from the owner. I ask whether he ceased to possess it or not. I answered that he immediately ceased to do so. 1When it is stated by the ancients that no one could himself change the title of his possession, it is probable that they had in mind one who, being in possession of property bodily, as well as by intention, determined to possess it under some other title; and not one who, having relinquished possession under his first title, desired to obtain possession a second time, under another.