The party moved slowly along the path from the spring to the fires, and as they walked Mr. Arnold and the travellers gave an account of all that had happened after Sergeant Henry left for Fort Whipple.
The burning arrows sent to the pitch-pine roof became so numerous that the besieged found it impossible to prevent the flames from catching in several places. Henry was hardly out of sight before the house became untenable, and the defenders were obliged to retire to the fort. When the house was consumed, and its timbers had fallen into the cellar a mass of burning brands, the space about the earthwork was clear, and the rifles at its loop-holes kept the Indians close within the out-building they had occupied since the attack began. No one dared to show himself to the unerring marksmen, who watched every movement.
For a long time silence reigned among the Indians. The whites, however, felt sure that plans were being matured which meant disaster to them.
At last these plans were revealed in a constant and rapid flight of arrows, directed at a point between two loop-holes—a point which could not be reached by the besieged, and where, if a considerable collection of burning brands could be heaped against the logs, between the earth and the eaves, the pine walls and rafters must take fire. Walls and roof were too solid to be cut away, and water could not reach the outside.
The defenders, when they realized what the result of a fire would be, held a consultation, and decided that in the event of the fire getting control of the fort they should retire into the covered way, block up the entrance with earth, and remain there until help should arrive. It was thought the Indians would suppose all had perished in the flames.
"But they know we came here by an underground passage from the house," said Brenda; "will they not suspect we have entered another passage if we all disappear?"
"P'r'aps they may," answered Mr. Arnold; "I had not thought of that. We'll have to take our chances."
"If one of us was to appear to escape from here, and join them," continued the girl, "I think they would suppose the others had perished, and make no search."
"That may be true, but I'll take my chances here," said Mr. Gilbert.
"So will I," said his companion. "A fellow wouldn't last a minute outside this fort. I prefer smothering to the death those devils will give me."