In Louisiana. Those persons whom the testator or donor cannotdeprive of the portion of his estate reserved for them by law, except in cases where hehas a just cause to disinherit them. Civil Code La. art. 1495. And see Crain v. Crain, 17Tex. 90; Ilagerty v. Hagerty, 12 Tex. 450; Miller v. Miller, 105 La. 257, 20 South. S02.