"No doubt he has, Easton; he could scarcely have been in a condition when he arrived here to take off the saddles and hide them away. What can have become of the other?" The grove was searched thoroughly from end to end, but no sign found of the missing man. Some boughs were cut down and a rough stretcher made, and upon this the sergeant was laid and the force then moved on, the camels being saddled and mounted by two of the men, and on arriving at the camp the sergeant was taken to the hospital.

As soon as dinner was eaten the men were paraded again. A council had been held to decide upon the best course to be taken, and it was decided that a fort should be built down by the river, and that the whole force should establish itself there with the exception of the Guards' Camel Regiment, which should remain at Gubat so as to prevent any body of the enemy posting themselves there and keeping up an annoying fire upon the fort down by the river.

Gubat had already been roughly fortified, and the whole force was therefore set at work to erect with camel-saddles and boxes a defence for the position by the river. When this was done the wounded were all carried down to the new fort. After the work was over Rupert strolled up through the village to have a chat with Easton. As he was sitting there an orderly came up.

"Mr. Clinton, the surgeon has sent me up with two letters that were found inside the jacket of the wounded sergeant who was brought in this afternoon. One is directed to you and the other to Captain Percy Clinton."

"That is very curious," Rupert said, taking the letters and turning them over in his hand. "How is the man going on, orderly?"

"He is insensible still, sir. I believe the doctors say that it is fever, and that his wound is not serious. One of the men of his regiment who is in the hospital says he got it at Abu Klea, and that it was attended to there."

"Thank you, orderly, that will do. What in the world can the man be writing to me about, and to my father, which is still more curious?"

"I should say the best way of finding out, Clinton, will be to open the letter."

"Well, I suppose it will be," Rupert replied. "Still, it is always interesting to guess at a mystery before you find the key."

"Well, guess away," Easton said, stretching himself out on his back. "I never was a good hand at riddles."