22Offences under the following provisions of the [1953 c. 36.] Post Office Act 1953—
(a)section 53 (unlawfully taking away or opening mail bag);
(b)section 55 (fraudulent retention of mail bag or postal packet);
(c)section 57 (stealing, embezzlement, destruction etc. by officer of Post Office of postal packet);
(d)section 58 (opening or delaying of postal packets by officers of the Post Office).