Now the explanation of Willie's curious discovery, as we afterwards fully learned, was this: When I took up the dead falcon, Hercus, intent upon witnessing Selta's skill at ratting, stood beside the dog as she scraped with her forefeet the shingle from the crevice through which the rat had escaped. Disappointed at losing her prize, the terrier dug and dug away at the shingle and moist sand, scattering it behind her, and burying her nose deep down. Then a strange, grim object was unearthed. In the midst of the stones, Hercus, to his horror, saw lying there a ghastly human skull, with the great cavities where the eyes had been, staring at him. Hesitating at the sight of this frightful spectacle, he at last mustered courage to take the thing in his hand. He was in the act of examining it, when, from one of the hollow eye sockets, out jumped the fugitive rat. Had the jaws of the skull moved in speech, Willie could not have been more terrified than he was by seeing the rat spring from its strange hiding place. Dropping the horrible thing upon the rock at his feet, where the rotten bone broke into fragments, he rushed out upon the beach and called us back. Attracted to the spot again, he watched the dog burrowing in the shingle. Amongst the stones and sand he saw the dull sheen of what he at first supposed was a curious seashell, but which, when he picked up and examined it, he found to be an old coin. Believing that there might be more of these buried in the sand, he went down upon his knees once more to search. He had just discovered the bar of metal when we returned. "What is it?" he said. "Why, it's silver?" We each in turn handled the little bar, and expressed our opinion regarding what Hercus supposed it to be. It was heavy enough, certainly, to be silver; but the improbability of such a piece of the precious metal being left there presented itself, and none of us was quite satisfied until Hercus, taking out his knife, cut and scraped the surface of the ingot and revealed the shining white metal underlying the grit and tarnish that had gathered upon it during the years--perhaps the centuries--it had lain there undisturbed. By our united efforts we enlarged the hole that Willie and the dog had made, digging with the harpoon and removing with our hands the loosened stones. We found a quantity of antique coins of various sizes, which, by reason of their lightness, I suppose, were much scattered about. Then deeper down below these we came upon a number of large rings, or bracelets, in the form of horseshoes, and several ingots of silver, similar to the one Hercus had first found. We grew excited in our search; and as the quantity of treasure we unearthed increased, so did we increase our exertions, until there was quite a heap of silver gathered upon the slab of flagstone where we placed it.