But just now that tragic stage is empty and silent like a church on a weekday, with the bench all sheeted up and nothing moving but the sunbeams on the wall. A little farther and you strike upon a room, not empty like the rest, but crowded with productions from bygone criminal cases: a grim lumber: lethal weapons, poisoned organs in a jar, a door with a shot hole through the panel, behind which a man fell dead. I cannot fancy why they should preserve them, unless it were against the Judgment Day. At length, as you continue to descend, you see a peep of yellow gaslight and hear a jostling, whispering noise ahead; next moment you turn a corner, and there, in a whitewashed passage, is a machinery belt industriously turning on its wheels. You would think the engine had grown there of its own accord, like a cellar fungus, and would soon spin itself out and fill the vaults from end to end with its mysterious labours. In truth, it is only some gear of the steam ventilator; and you will find the engineers at hand, and may step out of their door into the sunlight. For all this while, you have not been descending towards the earth’s centre, but only to the bottom of the hill and the foundations of the Parliament House; low down, to be sure, but still under the open heaven and in a field of grass.