(1)Subject to the provisions of section 19, the estate duty payable in respect of property, movable or immovable, passing on the death of the deceased, shall be a first charge on the immovable property so passing (including agricultural land) in whomsoever it may vest on his death after the debts and in cumbrances allowable under Part VI of this Act; and any private transfer or delivery of such property shall be void against any claim in respect of such estate duty.