569. If a person dying without a spouse capable of inheriting or issue surviving, leave his father and mother and also brothers or sisters, or nephews or nieces in the first degree, the succession is divided into two equal portions, one of which devolves to the father and mother, who share it equally, and the other to the brothers and sisters, nephews and nieces of the deceased, according to the rules laid down in the following section. (Substituted by Act 34 of 1956)