law: 43. Power to arrest for offence under section 42.
  When any person, in the presence of any officer of a prison, commits any offence specified in the last foregoing section, and refuses on demand of such officer to state his name and residence, or gives a name or residence which such officer knows, or has reason to believe, to be false, such officer may arrest him, and shall without unnecessary delay make him over to a Police-officer, and thereupon such Police-officer shall proceed as if the offence had been committed in his presence.