But no living thing
was in sight. A click and all was black again.
"Nothing doing," exclaimed Bob.
"Wait," suggested Ned, "persons we couldn't see may have seen them."
Almost as he spoke there was another quick report.
"Did you see the flash, Alan?" asked Ned eagerly, for he had been
busy with the dynamo.
But Alan was already at the wheel, and again the car swung from its
course.
"Wait," he exclaimed, "turn it on again when I give the word."
After perhaps two minutes he gave the signal and again Ned flashed
the gleaming bulb. Again the circle sprang apparently out of the
black ground. As the car drifted forward the black blotched golden
sand ran the opposite way like a whirling panorama. A coyote
sprang, dazed, from a clump of bushes and back again, but that was
all.
"Give him another chance," whispered Alan, and the light flashed
out.
"Listen," exclaimed Bob breathlessly, "wasn't that a cry?"
Another moment and the sound came again.
"Elmer!" exclaimed the two air ship boys together.
The Cibola swung instantly at Alan's quick touch.
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