"Why walking?" asked the boy.

"Because they shot our horses," gritted the officer.

After partaking of a midnight supper, including several cups of hot coffee apiece, the man-hunters continued on their way, looking longingly in the direction of the burros as they passed out of the light of the fire.

"Now that's what I call rotten!" Tommy exclaimed as the voices of the men died away in the darkness. "We've just made camp in a place that looks good to me, and here comes a band of train robbers and a delegation of lynchers ready to make us all kinds of trouble."

"I don't see why they should make us trouble," Sandy objected.

"Well, they will just the same," Will broke in. "They'll hang around the hills to the north, and officers will be chasing in after them, and, between them they'll give us a merry little time! If the messenger doesn't come tomorrow, we'll break camp and get into some other locality."

"I should say so!" exclaimed Tommy. "We went to Lake Superior and got into a nest of diamond smugglers, and we went to the Florida Everglades and got into a bunch of swamp outlaws and wreckers, and I've been counting on a nice quiet vacation this trip."

"We surely do have bad luck on our outing trips!" laughed Sandy. "But I rather enjoy the excitement after all!" he added, with a grin.

"Well, you wait until you get a band of train robbers shooting from one side, and a band of cowboys shooting from the other side, and you won't think it's so funny!" exclaimed George.

While the boys talked they heard a rustling in the long grass to the north and east, and directly a figure, crouching low and apparently walking with great caution, appeared in view.