"Don't you see it is a Christino surprise?" he said. "Open fire at once, or they will be upon you."

Instantly the men obeyed his orders. Others ran up and joined them, and Arthur strolled quietly away. He met numbers of men running up.

"Hurry up, hurry up!" he said. "The Christinos have attacked us from behind and carried the upper line. Run on! I am on my way to fetch up all the men."

ARTHUR MAKES HIS WAY THROUGH THE CARLIST LINES

In five minutes the fire ceased. Evidently some officer had come down from the upper trenches, and passed word along the lines that the alarm was false. By this time, however, Arthur was some distance down the hill, and had little fear of being discovered. No one, indeed, paid any attention to him. The Carlists were all discussing the meaning of the heavy firing and its sudden cessation. Some officers who had come down from the second line explained that it was all a mistake, and that no one could say how it had arisen. All that they had been able to gather was that someone had run down, that a sudden alarm had been given by somebody, and that the troops had fired wildly. They were enquiring into the matter at the top of the hill; at present it was all a mystery. Arthur spent a couple of hours gradually making his way down, examining the defences and noting their position, seeing in what strength the various loopholed houses were held, until at last he came to the lowest line, a deep trench with a high embankment, and salients thrown out to take any attacking force in flank. Here, as everywhere, he was questioned; but always replied that, as far as he knew, it had been a sudden panic, possibly an attempt by the Christinos to draw their attention to that point while an attack was made below. He therefore enjoined them to be on their guard. He sallied out at an opening in one of the angles made for the outlying pickets to run in, if attacked. He now proceeded very cautiously, and a hundred yards down he saw two figures ahead of him. He walked up to them.

"Is all well?" he asked.

"Everything is quiet in front of us," the men said, "as far as we have heard. But some thought that they heard heavy bodies of men marching this way."

"I am going out some little distance to find out. Be sure that you don't fire at me as I come back."

Without waiting for an answer he went on. He heard one say to the other: "He talks queerly; didn't you notice it?"