"Hallo, the camp!" he shouted when he had cleared his mouth sufficiently to enable him to do so.
"Hello!" answered Tad Butler far to the right.
"Are the others with you?"
"I don't know."
One by one the others of the party straggled to their feet, choking and coughing.
As if to mock them, the moon suddenly burst forth, shedding a brilliant light over the scene which a few moments before had been the center of a whirling, devastating cyclone.
Not a speck of anything save the white, glistening sand of the desert remained to mark the spot where the camp of the Pony Rider Boys had stood.
They gathered shivering in their pajamas, looking fearsomely into each others' eyes, still dazed from the shock and the fright of their experience.
"Wha—what was it?" stammered Walter Perkins.
"A genuine twister," laughed the guide.