4. Section 37 of the Indian Stamp Act under which the present application is purported to have been filed deals with admission of the improperly stamped instruments and states that the State Government make rules providing that, where an instrument bears a stamp of sufficient amount but of improper description, it may, on payment of the duty with which it is chargeable, be certified to be duly stamped, and any instrument so certified shall be deemed to have been duly stamped as from the date of its execution. In the present case, the document was already sent to the District Registrar which is admittedly authorized to discharge the functions of a Collector under the Indian Stamp Act by virtue of a notification issued under Section 2(9) of the Stamp Act, at the instance of the plaintiff who filed I.A.No.336 of 2007 for the said purpose under Section 33 of the Act. The said District Registrar certified that the suit agreement of sale is sufficiently stamped. Section 40(1) of the Act states that when the Collector impounds any instrument under Section 33, or receives any instrument, sent to him under Section 38, and if he is of opinion that such instrument is duly stamped or is not chargeable with duty, he shall certify by endorsement thereon that it is duly stamped, or that it is not so chargeable, as the case may be and if he is of opinion that such instrument is chargeable with duty and is not duly stamped, he shall require the payment of