Then he dived beneath the gun to the other prisoner, and having told him who he was, and that his son was close at hand, set him free also.

A moment later they were ready to start, Mr Hunter and Mr Richardson still standing against the wheels as though their lashings were secure.

“Hush, here comes the sentry!” Mr Hunter whispered as they were about to leave their posts.

Jack at once lay down upon the ground, and, opening the magazine of his rifle, slipped a cartridge in in readiness, in case there should be trouble.

A second later Hans Schloss swaggered up with his Mauser at the slope across his shoulder, and looked closely at each of the prisoners.

“Ha, Oom Hunter and Oom Richardson!” he laughed brutally, “this is a fine night for you. It is your last, my English friends, so make the most of it. Well, you are securely fastened, so I will leave you alone to think of your wives and your homes.”

Neither of the prisoners deigned to answer; but, had the vindictive and cowardly little German but known it, both were braced and ready to hurl themselves upon him and strangle the life out of him should he discover that their bonds were gone.

But, turning round with a sneering and cruel laugh, he walked back to his post, and all three at the gun breathed freely again. Another minute, and they would have hurried away, when a faint sound close in front of them attracted Jack’s attention. It was so faint that neither of the prisoners had heard it, but Jack’s trained ear told him that some men were approaching in the darkness.

“Wait, what is that?” he asked, detaining Mr Hunter and his comrade by the arm. “Surely the Boers are not coming up to work the gun!”