“ ‘By Jove!’ cried my client. ‘That’s Brunton’s muffler. I have seen it on him, and could swear to it. What has the villain been doing here?’

“At my suggestion a couple of the county police were summoned to be present, and I then endeavored to raise the stone by pulling on the cravat. I could only move it slightly, and it was with the aid of one of the constables that I succeeded at last in carrying it to one side. A black hole yawned beneath into which we all peered, while Musgrave, kneeling at the side, pushed down the lantern.

“A small chamber about seven feet deep and four feet square lay open to us. At one side of this was a squat, brassbound wooden box, the lid of which was hinged upwards, with this curious old-fashioned key projecting from the lock. It was furred outside by a thick layer of dust, and damp and worms had eaten through the wood, so that a crop of livid fungi was growing on the inside of it. Several discs of metal, old coins apparently, such as I hold here, were scattered over the bottom of the box, but it contained nothing else.