“Bob!” cried Lennox.

“Hullo!”

“I shall want some of your cartridges if help doesn’t come soon.”

Bob Dickenson made no further reply, but lay gazing with one eye along the barrel of his rifle; for as his comrade spoke it suddenly occurred to him that the top of the grey block of granite looked a little different, but in what way he could not have explained. He noted, too, that there was a tiny flash of light such as might have been thrown off a bright crystal of feldspar, and without pause now he held his rifle more firmly, laid the sight upon the flashing light, and the next moment he would have pulled the trigger. But ere he could tighten his finger upon the little curved piece of steel within the guard of his piece, there was a flash, a puff of smoke, and a sensation as if a wasp had whizzed by his ear. He did not move, only waited while one might have counted ten, and then tightened his grasp.

“Bah!” he ejaculated as the little puff of smoke rose slowly, “how this rifle kicks! Humph!” as the smoke cleared rapidly as soon as it rose enough for the wind to catch it, “I was right after all.”

“Hit?” asked Lennox.

“Yes; and just in time, for we should have been in an awkward place directly.”

“Yes; and I’m afraid we shall be all the same,” said Lennox. “Try if you can do any good at a couple of fellows across yonder. I can’t touch them from where I lie, and if I move I shall shoot no more.”

Dickenson turned from where he was gazing hard at the top of the granite block, the appearance of which was now completely changed; for the Boer who, in accordance with what the young officer had anticipated, had sent so dangerous a bullet whizzing by his ear, had suddenly sprung up, fallen forward, and now lay there with outstretched hands still clutching his rifle, which rested upon the ground in front.

“Mind me firing over you?” said the young officer.