The explorers continued the journey, although they realized that they could cover but a few more miles before dark. Already the sun was beginning to sink behind the distant hills, tinting the dunes many colors.

“Didn’t get as far today as we did yesterday,” observed Bob, as the boys waited for Tishmak to find a suitable stopping place.

The guide found the place he wanted between two large dunes, which were spread out over a large amount of ground.

“Tishmak say we wait here and get supper,” said Fekmah, after a moment of conversation in the native tongue. “Then when moon come out, we go on and try to make up for lost time.”

“That suits me,” agreed Dr. Kirshner. “Almost anything would satisfy my appetite right now.”

The explorers dismounted and prepared the meal, which after the strenuous hours of constant traveling tasted delicious. Then they sat quietly in the semidarkness.

At last the moon came out, and the desert was again seen to take on a new appearance. The sand was even more beautiful than the night before, white as it was from the soft light.

Tishmak motioned for the adventurers to mount their dromedaries and get under way. If they expected to get over much more territory, it would be necessary to hurry.

“Here’s hoping we can come up to our hundred-mile minimum,” said Joe, urging his camel to trot faster.