"We must endure it," replied Reeves calmly. "Even with a triple charge of powder our guns could not carry as far. We must endure it bravely," he repeated, "until the night."

"And then?"

"I hope to lead a body of men to capture the gun."

Having found the range, the Arab gunners proceeded to pound away at the same spot, their undoubted intention being to make a breach in the walls and gain an entrance into the city by means of the mass of rubble that threatened to bridge the wide moat completely. Seeing this, Reeves suggested to Sir Jehan that the soldiers should be removed from the immediate vicinity of the threatened wall, but at the same time be kept ready to defend the breach should the enemy attempt to carry it by assault.

The overlord of Croixilia, instantly acted upon this idea, and in utter helplessness the defenders heard and saw their vaunted walls being demolished by a persistent and well-directed shell fire.

Meanwhile Reeves set about finding volunteers for his hazardous enterprise, and when he had explained his plans there were plenty of brave men ready to bear their share in the sortie. Both Hugh and Gerald asked to be allowed to accompany him, but Reeves gave a blunt refusal. Finally he selected Garth and four others, all of whom had already proved themselves men of courage and resource during the first assault upon the walls.

The members of the forlorn hope were to ride as close to the Arab encampment as they could without much risk of discovery. Then they were to dismount, one man being left in charge of the horses, and make their way on foot up to the gun. Reeves explained carefully the mechanism of the breech block, in case he should be disabled. If possible, this all-important object was to be stealthily removed; if not, it was to be disabled by means of heavy blows with hammers.

The men were then to make their way back to the city as well as they were able, covered by a fire from the walls.

"I've spoken to Sir Jehan, lads," said Reeves, addressing his two charges. "If anything happens to me, he has promised by a solemn oath to do his best to send you into the protectorate of Nigeria, which, as far as I can make out, lies some seven hundred miles south-west of Croixilia. The river we crossed flows into that territory I feel certain."

"We hope nothing will happen to you," exclaimed both lads.