Graeme spent hours in one or the other of the huge
book-rooms talking with his strange protege and making copious notes.
Usually the old gentleman questioned and the other answered. But one
morning the attitude seemed, to the listening Ad-Visor, to be reversed.
Livius, in the far corner of the room, was speaking in a low tone. To
judge from the older man's impatient manner the Roman was interrupting
his host's current of queries with interrogations of his own. Average
Jones made a mental note, and, in conference with Warren that evening,
asked him to ascertain from Colonel Graeme whether Livius's inquiries
had indicated a specific interest in any particular line of reading.

On the following day, however, an event of more immediate import
occupied his mind. He had spent the morning in the up-stairs library, at
the unevadable suggestion of Colonel Graeme, while the colonel and his
Roman collogued below. Coming down about noon, Average Jones entered the
colonel's small study just in time to see Livius, who was alone in the
room, turn away sharply from the desk. His elbow was held close to his
ribs in a peculiar manner. He was concealing something under his coat.
With a pretense of clumsiness, Average Jones stumbled against him in
passing. Livius drew away, his high forehead working with suspicion.
The Ad-Visor's expression of blank apology, eked out with a bow and
a grimace, belied the busy-working mind within. For, in the moment's
contact, he had heard the crisp rustle of paper from beneath the
ill-fitting coat.

What paper had the man from B. C. taken furtively from his benefactor's
table? It must be large; otherwise he could have readily thrust it into
his pocket. No sooner was Livius out of the room than Average Jones
scanned the desk. His face lighted with a sudden smile. Colonel Graeme
never read a newspaper; boasted, in fact, that he wouldn't have one
about the place. But, as Average Jones distinctly recalled, he had,
himself, that very morning brought, in a copy of the Globe and dropped
it into the scrap basket near the writing-table. It was gone. Livius had
taken it.

"If he's got the newspaper-reading habit," said Average Jones to
himself, "I'll set a trap for him. But Warren must furnish the bait."

He went to look up his aide. The conference between them was long and
exhaustive, covering the main points of the case from the beginning.

"Did you find out from Colonel Graeme," inquired Average Jones, "whethe