"Then, General," Desmond said, with a smile, "I should say that your investigations are hardly satisfactory."

The general also smiled.

"Not so much so as I could wish," he said. "And now, may I ask why, seeing that you are well mounted, you did not turn and ride for it, when you first perceived us?"

"The reason is simple, General. A squadron of cavalry were coming up behind me, and there was evidently no possibility of escape."

"No doubt they were sent out to meet me. Well, sir, if you will give me your word not to attempt to escape, you can retain your sword, and ride with us."

"I give my parole, sir, with many thanks for your courtesy."

"And now, Captain Kennedy," the other went on, "it is probable that you have, about you, the result of your investigations along these roads, which I must request you to hand to me; as it may be as useful, to me, as it would have been to the Duke of Orleans, and may save me a good deal of trouble."

Desmond took out the notebook in which he had, each day, jotted down the result of his observations, with suggestions as to the points where repairs were most needed. He had each night, on his return to Badajos, written up his reports from these, intending, when he had completed the work, to take it himself to Madrid.

The general glanced through the notebook.

"You have done your work very thoroughly, Captain Kennedy, and have rendered me considerable service. Now, we will move forward again. Please follow with my aides-de-camp."