The ascendant may appoint a substitute for the descendant over 14 years of age who, in accordance to law, has been declared disqualified on account of being of unsound mind.\nThe substitution referred to in the foregoing paragraph shall be without effect by the will of the incapacitated person made during a lucid interval or after having recovered his reason.\nHistory —Civil Code, 1930, § 705.
Puerto Rico Legal Code