"Water?" exclaimed Tom. "No water is dripping from there."
"Come and look," advised Mr. Damon.
The young inventor raced back with him. He saw a thin, white stream trickling down from the lower part of the craft. Tom sniffed the air suspiciously.
"Gasolene! It's gasolene!" he cried. "We must have a leak in the supply tanks!"
He dashed toward the reserve storeroom, and at that moment, with a suddenness that was startling, the motor stopped and the Falcon lurched toward the earth.
CHAPTER XXV
HOMEWARD BOUND—CONCLUSION
"All right!" yelled Ned, as soon as he heard Tom's cry. "I've got her under control. We'll volplane down."
"Is it dangerous? Are we in danger?" asked Peter Petrofsky of his brother, in Russian.