Section 9 along with the relevant clause runs thus: (1) The tax shall be payable by an assessee under the head ' income from property ' in respect of the bona fide annual value of property consisting of any buildings or lands appurtenant thereto of Which he is the owner, . . subject to the following allowances, namely : (iv) where the property is subject to a mortgage or other capital charge, the amount of any interest on such mortgage or charge; where the property is subject to an annual charge not being a capital charge, the. amount of such charge; where the property is subject to a ground rent, the amount of such ground rent; and, where the property has been acquired, constructed, repaired, renewed or recon structed with borrowed capital, the amount of any interest payable on such capital; . . . " It will be seen that clause (iv) consists of four sub clauses corresponding to the four deductions allowed 556 under the clause.