We lingered so long over the leaves from which I had read, that as I consigned them to their former resting-place, the hand of my trusty clock pointed to twelve, and there came towards us upon the wind the voice of the deep and distant bell of St. Paul's as it struck the hour of midnight.

'This,' said I, returning with a manuscript I had taken at the moment, from the same repository, 'to be opened to such music, should be a tale where London's face by night is darkly seen, and where some deed of such a time as this is dimly shadowed out. Which of us here has seen the working of that great machine whose voice has just now ceased?'

Mr. Pickwick had, of course, and so had Mr. Miles. Jack and my deaf friend were in the minority.

I had seen it but a few days before, and could not help telling them of the fancy I had about it.

I paid my fee of twopence upon entering, to one of the money- changers who sit within the Temple; and falling, after a few turns up and down, into the quiet train of thought which such a place awakens, paced the echoing stones like some old monk whose present world lay all within its walls. As I looked afar up into the lofty dome, I could not help wondering what were his reflections whose genius reared that mighty pile, when, the last small wedge of timber fixed, the last nail driven into its home for many centuries, the clang of hammers, and the hum of busy voices gone, and the Great Silence whole years of noise had helped to make, reigning undisturbed around, he mused, as I did now, upon his work, and lost himself amid its vast extent. I could not quite determine whether the contemplation of it would impress him with a sense of greatness or of insignificance; but when I remembered how long a time it had taken to erect, in how short a space it might be traversed even to its remotest parts, for how brief a term he, or any of those who cared to bear his name, would live to see it, or know of its existence, I imagined him far more melancholy than proud, and looking with regret upon his labour done. With these thoughts in my mind, I began to ascend, almost unconsciously, the flight of steps leading to the several wonders of the building, and found myself before a barrier where another money-taker sat, who demanded which among them I would choose to see. There were the stone gallery, he said, and the whispering gallery, the geometrical staircase, the room of models, the clock - the clock being quite in my way, I stopped him there, and chose that sight from all the rest.

I groped my way into the Turret which it occupies, and saw before me, in a kind of loft, what seemed to be a great, old oaken press with folding doors. These being thrown back by the attendant (who was sleeping when I came upon him, and looked a drowsy fellow, as though his close companionship with Time had made him quite indifferent to it), disclosed a complicated crowd of wheels and chains in iron and brass, - great, sturdy, rattling engines, - suggestive of breaking a finger put in here or there, and grinding the bone to powder, - and these were the Clock! Its very pulse, if I may use the word, was like no other clock. It did not mark the flight of every moment with a gentle second stroke, as though it would check old Time, and have him stay his pace in pity, but measured it with one sledge-hammer beat, as if its business were to crush the seconds as they came trooping on, and remorselessly to clear a path before the Day of Judgment.

I sat down opposite to it, and hearing its regular and never- changing voice, that one deep constant note, uppermost amongst all the noise and clatter in the streets below, - marking that, let that tumult rise or fall, go on or stop, - let it be night or noon, to-morrow or to-day, this year or next, - it still performed its functions with the same dull constancy, and regulated the progress of the life around, the fancy came upon me that this was London's Heart, - and that when it should cease to beat, the City would be no more.