Subject to a contrary or other intention signified by the will—
(a) pecuniary legacies shall be paid out of the property comprised in class 2 referred to in section 59 after the discharge of the debts or such part thereof as are payable out of that property; and
(b) to the extent to which the property comprised in class 2 referred to in section 59 is insufficient the pecuniary legacies shall abate proportionately.