These were the questions that it behoved him to consider.  At the end of an hour he decided that the game was worth the candle:  he would risk his fifty guineas.

Taking one of Platzoff’s horses, he rode without delay to the nearest telegraph station.  His message to the bookseller was as under: 

“Buy the book, and send it down to me here by confidential messenger.”

The next few day were days of suspense, of burning impatience.  The messenger arrived almost sooner than Ducie expected, bringing the book with him.  Ducie sighed as he signed the cheque for fifty guineas, with ten pounds for expenses.  That shabby calf-bound worm-eaten volume seemed such a poor exchange for the precious slip of paper that had just left his fingers.  But what was done could not be undone, so he locked the book away carefully in his desk and locked up his impatience with it till nightfall.

He could not get away from Platzoff till close upon midnight.  When he got to his own room he bolted the door, and drew the curtains across the windows, although he knew that it was impossible for anyone to spy on him from without.  Then he opened his desk, spread out the MS. before him, and took up the volume.  A calf-bound volume, with red edges, and numbering five hundred pages.  It was in English, and the title-page stated it to be “The Confessions of Parthenio the Mystic:  A Romance.  Translated from the Latin.  With Annotations, and a Key to Sundrie Dark Meanings.  Imprinted at Amsterdam in the Year of Grace 1698.”  It was in excellent condition.

Captain Ducie’s eagerness to test his prize would not allow of more than a very cursory inspection of the general contents of the volume.  So far as he could make out, it seemed to be a political satire veiled under the transparent garb of an Eastern story.  Parthenio was represented as a holy man—­a Spiritualist or Mystic—­who had lived for many years in a cave in one of the Arabian deserts.  Commanded at length by what he calls the “inner voice,” he sets out on his travels to visit sundry courts and kingdoms of the East.  He returns after five years, and writes, for the benefit of his disciples, an account of the chief things he has seen and learned while on his travels.  The courts of England, France and Spain, under fictitious names, are the chief marks for his ponderous satire, and some of the greatest men in the three kingdoms are lashed with his most scurrilous abuse.  Under any circumstances the book was not one that Captain Ducie would have cared to wade through, and in the present case, after dipping into a page here and there, and finding that it contained nothing likely to interest him, he proceeded at once to the more serious business of the evening.

The clocks of Bon Repos were striking midnight as Captain Ducie proceeded to test the value of the first group of figures on the MS., according to the formula laid down for him by his friend Bexell.