Strachan wisely asked no questions, but watched and followed. The Arabs had evidently gathered in considerable numbers about the pile of boulders among which the gun-cotton mine was buried. Reece had forbidden any one to molest them from the balcony, not wishing to drive them away. He now went to his battery, attached the wires, brought two ends together, and the ground shook. There was a roar and a rattle; blocks of stone, arms, heads, legs went flying into the air, and a whole posse of Arabs were seen scuttling away into the mimosa bushes.

“What is bred in the bone,” said Strachan to himself.

“He is a Dodger still!”

The men got some more shots at their enemies in the confusion caused by the explosion. It was a useful measure, this, however; for six men with water-cans, and six with rifles, who were waiting close to the gap, rushed out to the well the moment they heard the explosion, and in the confusion into which the enemy were thrown by an event which seemed to them supernatural, in the dust and in the smoke they accomplished their task of filling the cans and retiring without being observed, much less attacked.

It was not until they were safely back in the zereba that the Arabs began firing harmless volleys, in evident anger at having been out-manoeuvred. The water gained was not so much in quantity, but was a great boon nevertheless, for it had been absolutely necessary to water the camels, and that had absorbed every drop of their own springs for the last twelve hours, and was very insufficient for the poor animals then. Strachan loosened his horse’s girths and rubbed him down with a palm-leaf or two, doing what he could for him after his gallant efforts. It was pitiful to hear him whinny as he smelt the water in the distance, and not to be able to get him any. But perhaps a little could be spared from what trickled out by-and-by.

Presently Captain Reece came back to his visitor.

“Well, now I have time to ask, how on earth did you come to choose this desert for a steeple-chase course, and our little zereba for a goal?” he asked.

“I am acting on the staff,” said Strachan; “only galloping, you know. And I was sent out to find you if I could, and tell you to make for Shebacat, and, if you could, to get on to Abu Klea at once. If I found any of the enemy out in this direction, and could not get on, I was to return at once, and a force was to be sent to relieve you; but it was important to avoid this if possible, I was given to understand. However, I had no chance of returning, for the first glimpse I got of the enemy consisted of a small body of mounted Arabs, who cut off my retreat, and chased me all the way here.”

“We are not to make back to Gubat, then?” asked Reece in surprise.

“No,” said Strachan.