For two days they plodded steadily across this arid and deserted plain. The dry heat became severe. There were not only no RIOS, but even the ponds dug out by the Indians were dried up. As the drought seemed to increase with every mile, Paganel asked Thalcave when he expected to come to water.

"At Lake Salinas," replied the Indian.

"And when shall we get there?"

"To-morrow evening."

When the Argentines travel in the Pampas they generally dig wells, and find water a few feet below the surface. But the travelers could not fall back on this resource, not having the necessary implements. They were therefore obliged to husband the small provision of water they had still left, and deal it out in rations, so that if no one had enough to satisfy his thirst no one felt it too painful.

They halted at evening after a course of thirty miles and eagerly looked forward to a good night's rest to compensate for the fatigue of day. But their slumbers were invaded by a swarm of mosquitoes, which allowed them no peace. Their presence indicated a change of wind which shifted to the north. A south or southwest wind generally puts to flight these little pests.