“The mine!” was the cry that leaped to the lips of both Colonel Graham and Mr Burgrave, and the former added, “It must have exploded prematurely when Beltring heard the noise, but in the crash of our own wall the rest of us did not notice it.”

“This explains the enemy’s anxiety to keep us at a distance,” said the Commissioner. “But why employ a mounted patrol, and only one man?”

“It was simply to give an impression of watchfulness, I suppose. Can you suggest any other explanation, Ressaldar?” and the Colonel turned to Badullah Khan, who stood beside them.

“That was no enemy, sahib. It was Sinjāj Kīlin Sahib Bahadar.”

“Nonsense!” cried Mr Burgrave. The native officer drew himself up.

“We who knew Kīlin Sahib can judge better than the Kumpsioner Sahib what he would do. When we have heard him riding all night between us and the enemy, preventing them from attacking us, are we to doubt the witness of our own ears—nay, our eyes, since certain of the sowars swear that they beheld him?”

“I beg your pardon, Ressaldar,” said the Commissioner, with marked politeness. “I suppose it will now be an article of faith all along the frontier that General Keeling saved the fort last night?”

“Without doubt, sahib. Is it not the truth?”

“I must say I wish my faith was as robust as the regiment’s!” said the Commissioner with a smile, as they turned to descend the steps.

“A white flag, sir!” reported Winlock, who was on guard at the gateway, when they reached the ground.