72. (1) Except where the refusal is made on the ground of denial of execution, an appeal shall lie against an order of a Sub-Registrar refusing to admit a document to registration (whether the registration of such document is compulsory or optional) to the Registrar to whom such Sub-Registrar is subordinate, if presented to such Registrar within thirty days from the date of the order; and the Registrar may reverse or alter such order.(2) If the order of the Registrar directs the document to be registered and the document is duly presented for registration within thirty days after the making of such order, the Sub-Registrar shall obey the same, and thereupon shall, so far as may be practicable, follow the procedure prescribed in sections 58, 59 and 60; and such registration shall take effect as if the document had been registered when it was first duly presented for registration.