He was left to himself, however, and there was comfort in that.

He had liberty to walk in a small paved yard at a certain hour, and learnt from the turnkey, who came to unlock his cell and show him where to wash, that there was a regular time for visiting, every day, and that if any of his friends came to see him, he would be fetched down to the grate.

When he had given him this information, and a tin porringer containing his breakfast, the man locked him up again; and went clattering along the stone passage, opening and shutting a great many other doors, and raising numberless loud echoes which resounded through the building for a long time, as if they were in prison too, and unable to get out.
This turnkey had given him to understand that he was lodged, like some few others in the jail, apart from the mass of prisoners; because he was not supposed to be utterly depraved and irreclaimable, and had never occupied apartments in that mansion before.

Kit was thankful for this indulgence, and sat reading the church catechism very attentively (though he had known it by heart from a little child), until he heard the key in the lock, and the man entered again.
'Now then,' he said, 'come on!' 'Where to, Sir ?' asked Kit.
The man contented himself by briefly replying 'Wisitors;' and taking him by the arm in exactly the same manner as the constable had done the day before, led him, through several winding ways and strong gates, into a passage, where he placed him at a grating and turned upon his heel.

Beyond this grating, at the distance of about four or five feet, was another exactly like it.