"Vell, don'd let us peen all nighd apout gedding a mofe on," fluttered Hans, hastening toward the horses.

So they mounted and rode away toward Mendoza, although Frank was far from satisfied to do so without solving the mystery of the remarkable disappearance.

Darkness was falling heavily on the plain, across which a cool and refreshing breath came from the distant mountains.

Frank kept his eyes open for danger, more than half expecting to run upon a gang of bandits at any moment. As they approached the town they began to breathe easier, and, before long, they were riding along the dusty road that led into the little town.

Entering Mendoza they found on each hand low buildings connected by long, white adobe walls, against which grew prickly pears in abundance, running in straggling lines away out upon the open country.

About the edges of the town were little fires, winking redly here and there, with earthen pots which were balanced on smoldering embers raked out from the general mass.

Withered and skinny old hags were crooning over the pots, surrounded by swarthy children and lazy men, who were watching the preparation of the evening meal.

Groups of peons, muffled to the eyes with their serapes, were sitting with their backs to the adobe walls, apparently fast asleep; but Frank noted that glittering, black eyes peered out from between the serapes and the huts, and he had no doubt but that many of the fellows would willingly cut a throat for a ridiculously small sum of money.

Within the town it was different. All day the window shutters had been closely barred, but now they were flung wide, and the flash of dark eyes or the low, musical laugh of a señorita told that the maidens who had lolled all the hot day were now astir.

Doors were flung wide, and houses which at midday had seemed uninhabited were astir with life. In the patios beautiful gardens were blooming, and through iron gates easy-chairs and hammocks could be seen.