We looked at the opal, and sure enough the poison-tint was gone, and under the pale, semi-opaque blue of its surface, lights of red, of green, and of orange, flitted to and fro.

"It is wonderful," I said, and D'Amboise smiled grimly to himself. The cardinal placed his finger on the map, where the port of Sinigaglia was marked.

"Is it here he lands?"

"Yes," replied Machiavelli, "and then straight to Rome."

"You have sure information?"

"Yes."

"Then will your excellency instruct M. Donati? As arranged, I pledge an immediate movement on the part of Tremouille, at the first sign of success."

"You have agreed, cavaliere, to undertake the task?" and the secretary turned to me.

"I have, your excellency."

Machiavelli then went on, speaking incisively, wasting no words. "In ten days or thereabouts from now, Monsignore Bozardo, the Papal envoy to the Grand Turk, will land at Sinigaglia and start for Rome. He brings with him a letter and a sum of money, forty thousand ducats. These are for his holiness. Bozardo and the letter may reach, if you like; the ducats must not."