“The ambassadors of the other nations asked us to take the matter in hand and hasten the assistant keeper to the plant. All day a thousand cruisers have been searching for him until just now one of them returns bearing his dead body, which was found in the pits beneath his house horribly mutilated by some assassin.

“I do not need to tell you what this means to Barsoom. It would take months to penetrate those mighty walls, in fact the work has already commenced, and there would be little to fear were the engine of the pumping plant to run as it should and as they all have for hundreds of years; but the worst, we fear, has happened. The instruments show a rapidly decreasing air pressure on all parts of Barsoom⁠—the engine has stopped.”

“My gentlemen,” he concluded, “we have at best three days to live.”

There was absolute silence for several minutes, and then a young noble arose, and with his drawn sword held high above his head addressed Tardos Mors.