FURTHER CHARGE - Instrument of

(a) When the original mortgage is one of the description referred to in clause (a) of Article No. 40 (that is, with possession): The same duty as a conveyance (No. 23) for a consideration equal the amount of the further charge secured by such instrument. (b) when such mortgage is one of the description referred to in clause (b) of Article No. 40 (that is, without possession), (i) if at the time of execution of the instrument of further charge possession of the property is given, or agreed to be to be given under such instrument: The same duty as a Conveyance (No. 23) for a consideration equal to the total amount of the charge (including the original mortgage and any further charge already made) less the duty already paid on such original mortgage and further charge. (ii) if possession is not so given: The same duty as a Bond (No. 15) for the amount of the further charge secured by such instrument.