"I'm afraid we can't do it. Koku, lend a hand here!" he exclaimed as the giant entered. "See if you can twist this wrench around, but don't break off the handle, whatever you do."
"Me shove," replied the giant simply, as he grasped the big wrench.
Once more Ned glanced at the pressure gage. It showed seven hundred pounds now, and there was only a margin of safety of one hundred pounds more, ere a terriffic explosion would occur. Still Tom had not given the order to descend to earth.
"Are you going to make it, Tom?" asked the government agent, anxiously, as he stood over the young inventor.
"I–I think so," panted Tom. "Are we near the Dominion line,"
"Pretty close," was the discouraging answer. "I'm afraid we can't get 'em before they cross. Can you use any more speed?"
"I don't know. Ned, see if you can get another notch out of her."
With one hand Ned reached for the accelerator lever on the wall near him, and pulled it to the last notch. The Falcon shot ahead with increased speed, but, at the same instant there came a gasp from Koku, and the sound of something breaking.
