"Well?" came back from his two chums in danger.

Thus began a conversation which, with intervals of silence, when the sentries' heavy footsteps passed, continued into early dawn. Then, with a consciousness that the future alone could bring about a solution of their dilemma, the three tired lads tumbled into their cots to sleep the slumber of vigorous, exhausted youth.

CHAPTER XIV.

"DEATH TO THE GRINGOES!"

It was broad daylight when the lads awoke. About them the life of the camp had been astir for some time, in fact. Bugles rang out cheerily and ragged troopers hastened hither and thither, with fodder or buckets of water for their mounts, for in Madero's flying squadron each man looked after his own animal, with the exception of a small force detailed to commissariat duty. From the village below, curious-eyed Mexicans began pouring into camp with the earliest dawn, and by the time the three involuntary imposters were out of their tent and had doused each other with cold water, the place presented a scene of lively activity and bustle.

"Sitting on the edge of a volcano seems to agree with us," remarked Jack, as the three sauntered off to join Bob Harding, who was standing outside his tent door, smoking a cigarette, a bad habit he had picked up from the Mexicans.

Indeed, three more manly, rugged lads would have been hard to find. Under their tanned skins the bright blood sparkled, and there was a surety in their long, swinging stride and the confident set of their shoulders that made one feel a certainty that there was a trio that would be able to take care of itself in any ordinary emergency.

Refreshed, even by the few hours slumber, and with sharp-set appetites, the boys felt altogether different persons from the three bedraggled youths who had been jounced through the tunnel, and later thrown into such a perplexing combination of circumstances.

"I feel fit for anything," Ralph confided to Jack.