“It means all that,” I said, “and more. It means that if we do go to work without knowing the exact spot where old Godfrey and the abbot concealed the silver altar and the three chestsful of plate we might continue our investigations until doomsday and achieve nothing except the inevitable reputation of having made arrant fools of ourselves.”

“But how can we know the exact spot?” inquired Wyman, who was nothing if not entirely practical.

“By this plan most probably. The other plan undoubtedly refers to Threave Castle, in Scotland; therefore, what more likely than this should record the exact spot where the chests were submerged,” and I glanced at the tracing of the roughly drawn diagram with its crooked lines and puzzling numerals. “If we could only discover the key!” I added wistfully.

“I think it would be wise, seeing that we can carry our investigations here no farther at this point, to ascertain who is the proprietor of this land and other facts for our future guidance. I notice that the writer of this guide is the rector, the Reverend Henry Mason. Why not call on him and make some antiquarian inquiries?”

To this I at once consented, and a quarter of an hour later we were seated in the rector’s cozy study under the shadow of the abbey walls. He was a short, elderly, spectacled gentleman of very affable manner, and full of information upon the subject which interested us.

Finding us interested in the history of the abbey, he produced from his bookshelves several rare volumes, including Felix’s “Life of St. Guthlac,” Histories of Crowland by Gough, Nicholls, and Canon Moore, and a volume of Cole’s collection of manuscripts which contained many notable extracts from the abbey registers. These interested me most of all; and while Wyman chatted with the rector I scanned through the pages, finding references to the silver altar and the golden cups and chalices of which we were now in search.

My friend made some casual inquiries regarding the field which we had just been over, whereupon the rector said:

“The old fish ponds were originally there, but have since been filled in with rubbish and fallen stones. Traces of the ponds, however, still remain. You may, perhaps, have noticed them. In that field, too, at the beginning of the century, a fine silver cup was dug up by a workman while getting out some of the old stones with which to build a cottage. It was claimed by the lord of the manor, and is now in the possession of the Marquis of Exeter at Burghley.”

“There may be some more,” I suggested, laughing.

“More than likely,” replied the clergyman. “According to a popular legend, a great treasure is buried somewhere hereabouts, but no one has yet been able to find it.”