Section 24. Every person imprisoned under section nineteen, twenty, twenty-one, twenty-two or twenty-three, shal

24. Every person imprisoned under section nineteen, twenty, twenty-one, twenty-two or twenty-three, shall, at the end of his term of imprisonment, be placed before the nearest Magistrate of Police or Justice of the Peace exercising powers as aforesaid, who shall, if he think fit, forthwith deal with him in the manner prescribed by sections five and six. The order of transmission shall certify the fact of the previous conviction.