Then he ordered the gates to be closed, which was accordingly done. It was now too late to alter existing circumstances, and the whole chances of detaching the Indian host from the cause of Xuarez lay with Cocom and the opal. Jack went off to the Casa Maraquando, in order to inform Don Miguel of all that had been done, and then rewarded himself for that wearisome afternoon by chatting with Dolores. It had been deemed advisable, by Don Miguel, to keep Jack's scheme secret, lest, should the attempt fail, and the opal be lost, the populace should lose heart in the forthcoming struggle with Xuarez. So long as the opal was in the city, they deemed themselves invincible; so, whether the attempt to detach the Indians succeeded or failed, Maraquando determined that the people of Tlatonac should still think that the sacred stone was in the possession of his niece. Late that night Jack went on the walls with Tim, and together they watched the Indians gather round the walls. Above the Puerta de la Culebra was fixed a powerful electric light, which irradiated a considerable portion of the space beyond the gate. Without the walls there was quite a town, as the huts of the peons stretched away in long lines, alternating with palms, cacti, aloes, and densely foliaged ombú trees. Close to the gate these huts clustered thickly together, but after a time became scattered, and finally ceased on the verge of the plains, where the ground was thickly covered with brushwood. The Indians, fearful of the guns protruding from the walls, and doubtful of the weird glare of the electric light, kept away beyond the line of huts, and finally camped in the open ground beyond. Notwithstanding the distance they kept from the town the powerful rays of electric light blazed full on their camp, and caused them considerable uneasiness. The two Englishmen could see their tall, dark forms, gliding like ghosts through the white radiance, and at times a mounted troop of horsemen would dash furiously across the circle of light, disappearing into the further darkness. Just below, a stone's throw from the wall, arose the little chapel of Father Ignatius, beneath whose roof Cocom, with the opal, awaited the dawn. For some hours Jack watched the strange sight that savage picture, starting out of the surrounding darkness, and ultimately retired to his house, hopeful that before noon of the next day all the Indians would have disappeared. Tim remained behind, talking to Don Sebastian, and scribbling notes in his book; but at last he also went to rest, and the wall was left in possession of De Ahumada and his guard. All night long the electric light flashed its beams on the camp, so as to guard against an unexpected attack by the Indians.