This he knew must be heard by the suffering scout inside the cave. It would tell Jack they were going, and that he could immediately make a start looking toward relief from the overpowering fumes. Ned would have been better satisfied could he have received a return sign from the devoted chum, to assure him all was well; but of course that was utterly out of the question. He could only hope that dear old Jack would not by this time have become so weak from his sufferings as to be unable to make his crawl out to the pure air, and then follow after them. The three scouts looked quite dejected at first. They were so accustomed to having things come their way that this thing of being made prisoners galled them. Jimmy in particular bewailed the circumstances attending their capture. He seemed to think that it was next door to a disgrace because they had not been able to put up a desperate resistance, and at least disable several of the foe before yielding to superior force. "'Tis a shame, that's what it is," he kept on muttering, grimly, "to have to put up your hands like we did without knockin' the stuffin' out of a few of the enemy. I'll never be able to look myself in the face again, sure I won't." "Oh! yes you will, Jimmy," Harry assured him; "I expect to live to see the time when you sit beside a fire, gobbling your rasher of bacon and fried potatoes, and telling the story of this adventure to some of the other boys in the troop." "Now, that's adding insult to injury!" declared Jimmy, sadly; "when you go and make my mouth water tellin' about breakfast stuff. Chances are they'll try to starve us while they hold the lot for ransom." Ned gave him a punch in the side when he said this. "Let up on that kind of talk, Jimmy," he whispered sternly; "don't put the notion in their heads. If they once knew who Harry was, and what he came out here to do, they'd think up some scheme to get even with Colonel Job. Even Ally Sloper didn't hear what our mission was, and thinks we're just on the plains to have a good time. And keep up your spirits. Leave it to Jack; he's our best hope just now." They were walking by themselves at the time, the rustlers forming a sort of cordon around them though separated by a dozen or two feet; and hence the scouts found an opportunity to exchange a few remarks in whispers without being overheard. After that Harry and Jimmy did pluck up a little more hope. So long as Jack was free to move around they might expect assistance, though none of them could give more than a vague guess what shape it might take. Jack was to decide upon his own course. He might think it best to follow them up, and then, after seeing where the cattle thieves had their secret camp, make his way back to where the ponies had been left, mount, and head for the ranch at top speed in order to bring a rescue party to their relief.