Civil Code (Cap. 16), article 483

483. In regard to a third party in possession of the servient tenement, the easement shall be extinguished by the lapse of th e time required for the prescription of the ownership of the tene ment itself according to the provisions relating to prescription und er 146 [CAP. 16. CIVIL CODE Title XXV of Part II of Book Second of this Code. Prescription as to manner of use of easement.