Civil Code (Cap. 16), article 329

329. If the usufruct includes things which cannot be used without being consumed, such as money, grain, or liquids, the usufructuary has the right to make use of them subject to the obligation of paying the value thereof according to the valuati on made at the commencement of the u sufruct; in the absence of suc h valuation, he has the option either to return things in like qu antity and of like quality, or to pay their value at the current price at the end of the usufruct. Usufruct is constituted by law or by man.