Limitations of appeals

No appeal shall lie- (a) to the Sub-Divisional Officer or Deputy Commissioner or Settlement Commissioner, after the expiration of forty-five days from the date of the order appealed against; or (b) to the Chief Commissioner after the expiration of sixty days from such date; Provided that where a party, other than a party against whom the order has been passed ex-parte, had no previous notice of the date on which the order is passed, limitation under this section shall be computed from the date of the communication of such order.