“But they are fleeing on to American soil!” exclaimed Jack. “Si, señor Jack. Evidently the rascally rebels think that if they can gain the protection of the Stars and Stripes they will be safe.” Jack could not help feeling sympathy for the ragged band that was being so remorselessly pursued, even though he knew that the rebels had wrought all sorts of outrages, both on American soil and in their own country. For instance, only a short time before a band of cattle had been driven from an American ranch to feed the starving revolutionary troops. But such thoughts as these were soon interrupted by the boy’s absorbed interest in the drama taking place far below them. From the town a few men had come running at the sound of the shooting, but as they saw the armed men come sweeping through the ford they beat a hasty retreat. Only the school teacher, a pretty young girl, so far as Jack could see, and her little flock stood their ground. Having crossed the ford the pursued Mestizos did not draw rein. Instead, they urged their ponies on still more furiously. The clatter of their hoofs even reached to the aeroplane, which was swinging about in the blue ether some thousands of feet above. All at once Jack, with a quick intake of his breath, divined their purpose. The hounded band of revolutionaries was spurring and lashing for the schoolhouse. Their evident purpose was to seek refuge within it, under the protection of Old Glory. But what of the children and their young teacher? In case there should be firing, their position would be a terrible one. As the first of the rebel band dashed into the schoolhouse enclosure and the teacher and her pupils fled within in terror, Jack begged Lieut. Sancho to descend. “In case the Federals open fire on the schoolhouse many of those children will be killed,” he cried anxiously. Lieut. Sancho nodded. “I doubt if we can be of much use,” he said, “but at any rate we will drop down and see what can be done.” The aeroplane instantly began to descend, but before it was half way down the last of the refugees had dashed into the schoolhouse, and the door was slammed to and bolted. The Federals, close on the fugitives’ heels, withdrew to a short distance for a parley when they perceived this. From the schoolhouse windows a few scattering shots followed them, but none of them took effect. But the men who had done the shooting had perceived the approach of the aeroplane, which was now quite close to the ground. It was probably the first they had ever seen and they gazed at it with awe and some superstitious terror. “What do you want?” called one of them. “What shall we tell them?” Lieut. Sancho whispered to Jack. “Tell them to let the teacher and her scholars out of there at once or we will dynamite the place,” replied Jack without hesitation. “I’ll tell them that if they don’t, we shall drop a bomb from the aeroplane,” whispered the lieutenant.