"How did I manage to find the thing out?" said Cleek, answering the duke's query as they all sat together in the vicarage drawing-room, an hour or more afterward, discussing the affair. "Well, to tell you the truth, I think I got the very first inkling from the ringing of the bells. Oh, no, not through any special power of deduction or any super-human nonsense of that sort, but simply and solely through my memory. You will remember that I said Overton was not very original in his methods. Well, it so happened that I recalled the circumstance of a monkey which escaped from its cage and terrorized a Swiss village some years ago by climbing into the church belfry and inadvertently setting the bells ringing in the middle of the night by hopping from one to the other in an effort to maintain its equilibrium. That, of course, suggested a similar possibility here, and I set about deciding the point by means of the fullers' earth. By the way, Mr. Narkom, I chose fullers' earth not alone because of its yielding quality and its ability to receive impressions of even very slight things falling upon it, but because by reason of its weight and its rather tenacious character it was not so likely as another medium to be blown away by any sudden rising of the wind. I suppose you know that I placed the stuff about the tower's base when I left you at the limousine?" "I judged that," replied the Superintendent. "The thing which amazed me, however, was all that meaningless stuff about timber and cubic feet you talked about when you came back. I can't even yet get the hang of that."