The position in which the bull had been drawn showed that it was placed there to attract the eye of the person possessing the secret. To any other it would convey nothing. Yet, although we searched hither and thither, high and low, we discovered no cavity nor any place where the casket was likely to be concealed.
Presently, after full half an hour’s search, Fred discovered upon the flat surface of a stone some little distance further up the tunnel the numeral “15” marked in the same paint, and evidently put there by the same hand as that which had drawn the bull—only with one of those queer sixteenth-century fives like a capital N turned the wrong way about.
“Can this mean that the place is fifteen paces off?” I queried.
“Or it may be fifteen stones away,” suggested Sammy, starting at once to count them. “Why, look!” he cried a few moments later; “here’s a stone that’s been removed at some time or other.” It was a block about two feet long, and when I rushed forward and touched it, it moved beneath my hand.
Without a second’s hesitation I grasped it, and with all my might tugged it out of me wall, allowing it to fall to the ground with a heavy thud, Sammy being compelled to step aside quickly.
Then, plunging my hand deep into the cavity behind, I felt something and pulled it out, with a loud cry of joy, which was echoed by my two companions.
It was the long-lost casket!
About a foot and a half long, ten inches in height, and six broad, it was covered with stout old untanned leather, the lid being curved and studded with nails. The lock was an antique, and therefore a complicated one, no doubt; but having no key, we at once set to work to force it open with the short crowbar which I had carried down there. So stoutly made was that ancient box that had seen so many vicissitudes and hid in the mud of the abbey fish pond at Crowland for many years, that for some time I could not manage to force it open; but after several trials, in the dim, uncertain light, I at length succeeded in wrenching up the lid, and there found within several old jewel cases which, on being opened, were found to contain those wonderful emeralds which were the most valued treasures of the Borgias.
We handled them gingerly, at my suggestion, not knowing whether those faded, velvet-lined old cases might not be envenomed with poison of the Borgias, like the vellum leaves of The Closed Book.
The jewels we examined were, however, magnificent in their antique gold settings. Three collars of wonderful green gems, each emerald the size of one’s thumb nail, and each set separately to form drops, were the first ornaments we drew forth—emerald collars of which we knew the world had never seen the equal. Several bracelets, pairs of earrings, and pendants were also among the collection; one emerald, unset, and evidently the greatest treasure, being almost the size of a pigeon’s egg—a truly marvellous set of gems, the like of which none of us had ever before set eyes upon.