"What you say is very true, Philip," he replied slowly; "the secret way leading to the sea is very complicated, and even then the priests always blindfold pilgrims on the platform. This other road, leading from the ruined city, must be blocked up by rubbish, and what not. There is a wall across the entrance to the cañon, but it is pierced by a gate always open. No one comes by the narrow track, so I expect the entrance to that road has been choked up, and the way fallen into disuse." "Then how did Pepe find it out?" "Lord knows! But the secret must be his alone else the priests would have destroyed the cañon path leading to the pierced wall, and so cut off communication entirely from that side of the town." "I hope Pepe is not leading us into an ambush," said Peter, anxiously, as they arose to go. "If he does, it will cost him his life," replied Philip, grimly. "Pepe, my dear doctor, marches before us with a pistol at his head. The first signs of treachery, and he falls dead. I don't think he'll risk that catastrophe." By this time Peter had concluded his breakfast, and they all set out to the Puerta de la Culebra, near which, beyond the walls, was the railway station. On the previous night Pepe, under promise of his life being spared, had admitted that Don Hypolito had fled northward overland to Totatzine, gaining the city by the inland secret way. This road Pepe promised to reveal on condition that the President spared his life. Next morning, Rafael told his father of the offer, and, as Don Miguel was anxious to capture Xuarez, he readily assented to the proposition of the zambo. Of course the six thousand Indians, who had been disbanded by the influence of the opal, were not in the sacred city. Their villages were far to the north, near Acauhtzin, and as they only came south to the festivals of the opal, by the secret way of the sea, it was unlikely that the troops led by Rafael and Jack would encounter any resistance. The forests where the railway ended, and where, according to Pepe, the cañon road began, were singularly devoid of population. This might have been caused by the jealousy of the priests, lest some wandering Indians should find the entrance to the cañon road from the ruined city. If so, this jealous suspicion caused their ruin; for, had the district been infested with Indians, they, seeing an unusual concourse of soldiers at Cuavaca, would at once have warned the priests of the intended invasion of Totatzine. Then the cañon road could have been easily defended against the troops from Tlatonac by a small body of defenders, and the disaster averted. As it was, however, the inhabitants of the sacred city were entirely ignorant of their danger until the foe was under their walls.