The usufructuary, or universal, or by universal title, must contribute with the owner to the payment of debts as follows:
The value of the land subject to usufruct is estimated; the contribution to debts is then fixed in proportion to that value.
If the usufructuary wishes to advance the sum for which the land must contribute, the capital thereof is returned to him at the end of the usufruct, without any interest.
If the usufructuary does not wish to make this advance, the owner has the choice, either to pay this sum, and, in this case, the usufructuary takes the interest into account for him for the duration of the usufruct, or to have a portion of the property subject to the usufruct sold up to the due amount.