"How could we do that--far enough away from it not to be spotted, and yet near enough not to lose it?"
"Of course we couldn't all go together; some one must keep on the track, and that must be Bill for one."
"That wouldn't be much good. How could we keep in touch with him? I've got a field-glass, but that will be useless if we have to go through much wood. We can't rig Bill up with wireless!"
"No, but I'll tell you what we can do. You take the safari on the parallel line; I'll go with Bill and take my pocket-mirror with me. It will make a fine heliograph. You know the code, of course?"
"I do, as it happens. I could signal back with my watch-case. But that won't help us if there's a wood or a hill between us."
"Well, we must chance that; and as Bill and I shall be able to go much faster than you with the safari, we can come over to you if necessary; you see what I mean: come and go between the two tracks and yet keep up with you."
"I think that's got it. I suppose it's no use thinking what we'll do when we come up with the raiders?"
"No; all will depend on when we find them, and where. I'm not going to think of that, and as we shall have to be up early to interview the chief and get our things together, I vote we go to bed."
"Don't forget your letters."
"Right. Off you go. Goodness knows when we'll sleep next."