576. The division of the half or of the whole of the succession coming to the brothers, sisters, nephews or nieces, according to the terms of the 2 preceding articles, is effected in equal portions among them, if they are all born of the same marriage; if they are the issue of different marriages, an equal division is made between the 2 lines paternal and maternal of the deceased, those of the whole blood sharing in each line, and those of the half blood sharing each in his own line only. If there are brothers and sisters, nephews and nieces on one side only, they inherit the whole of the succession to the exclusion of all the relations of the other line. (Substituted by Act 34 of 1956)