"And when we do," she put in, "the best of luck to Hekki and his friends!"

A vision swept through Shelby's mind—batteries of fantastic machines whose maws spewed flames of faint lavender fire—blinding flashes of light and world-rocking explosions: a hideous thing to dream of—hideous yet glorious, for the civilizations and freedom of two worlds depended upon it. To the Red Planet—they must make it!

Janice Darell had placed her hand lightly on Shelby's arm. Her expression was serious, almost hard. "Austin," she said, "tell me truthfully, can we really reach Mars? It is likely that we shall get there before we go out?"

"Certainly, darling," he replied, putting as much assurance into the words and expression as was possible. "Why do you ask?"

There was something that suggested doubt, perhaps even displeasure in her answer: "We have a duty to perform, Austin—a duty infinitely bigger than our own petty existences. You have not seen what I have seen—small scouting patrols that came to the Selba riding strange round things that must have been machines of some kind. One look at those henchmen of Alkebar, their great black bodies, their quick nervous movements—like eager panthers, their wicked-looking weapons which they carried with such an air of easy assurance, and you would have known what they hoped to do. Most of these devils are within the orbit of Mars for the first time. Certainly Hekki has told you something about them?"

Shelby nodded. "Very little; but I have noticed a few of Alkebar's remarkable peculiarities," he said.

"Well," she continued, "if we can't get to Taboor, there is one thing we can do—destroy the Selba, and with it Hekki and Alkebar."

"Destroy the Selba!" Shelby exploded, "with what? Those toy machine guns on the nose of this bus? The bullets wouldn't even make noticeable scratches in the hide of that tough old girl."

"Not with the machine guns," Jan said slowly, "with this flier! A little luck and it would work."

The idea flashed through Shelby's brain. Ram the Selba at high speed! Absolutely certain self-murder! A wave of tremendous admiration for the girl came over him. She had something more in her favor than mere beauty and intelligence.