“Swan-shot.”

“That will do all right.  I carry this big bore double-barrelled pistol loaded with slugs.  You might as well try to stop one of these fellows with a pea-shooter as with a service revolver.”

“There are ways and means,” said Scott.  “The Geneva Convention does not hold south of the first cataract.  It’s easy to make a bullet mushroom by a little manipulation of the tip of it.  When I was in the broken square at Tamai—­”

“Wait a bit,” cried Mortimer, adjusting his glasses.  “I think they are coming now.”

“The time,” said Scott, snapping up his watch, “being exactly seventeen minutes past four.”

Anerley had been lying behind a camel staring with an interest which bordered upon fascination at the rocks opposite.  Here was a little woolly puff of smoke, and there was another one, but never once had they caught a glimpse of the attackers.  To him there was something weird and awesome in these unseen, persistent men who, minute by minute, were drawing closer to them.  He had heard them cry out when the kettle was broken, and once, immediately afterwards, an enormously strong voice had roared something which had set Scott shrugging his shoulders.

“They’ve got to take us first,” said he, and Anerley thought his nerve might be better if he did not ask for a translation.

The firing had begun at a distance of some 100 yards, which put it out of the question for them, with their lighter weapons, to make any reply to it.  Had their antagonists continued to keep that range the defenders must either have made a hopeless sally or tried to shelter themselves behind their zareba as best they might on the chance that the sound might bring up help.  But, luckily for them, the African has never taken kindly to the rifle, and his primitive instinct to close with his enemy is always too strong for his sense of strategy.  They were drawing in, therefore, and now, for the first time, Anerley caught sight of a face looking at them from over a rock.  It was a huge, virile, strong-jawed head of a pure negro type, with silver trinkets gleaming in the ears.  The man raised a great arm from behind the rock, and shook his Remington at them.

“Shall I fire?” asked Anerley.

“No, no; it is too far.  Your shot would scatter all over the place.”

“It’s a picturesque ruffian,” said Scott.  “Couldn’t you kodak him, Mortimer?  There’s another!” A fine-featured brown Arab, with a black, pointed beard, was peeping from behind another boulder.  He wore the green turban which proclaimed him hadji, and his face showed the keen, nervous exultation of the religious fanatic.

“They seem a piebald crowd,” said Scott.

“That last is one of the real fighting Baggara,” remarked Mortimer.  “He’s a dangerous man.”

“He looks pretty vicious.  There’s another negro!”

“Two more!  Dingas, by the look of them.  Just the same chaps we get our own black battalions from.  As long as they get a fight they don’t mind who it’s for; but if the idiots had only sense enough to understand, they would know that the Arab is their hereditary enemy, and we their hereditary friends.  Look at the silly juggins, gnashing his teeth at the very men who put down the slave trade!”