|life tube n.
||1930 Liners of Space in Air Wonder Stories Feb. iii. 708/1
Driscoll gave a cry and pointed to the screen. There it was—number 12 life tube—lying a thousand miles astern. In a few minutes the Swan had drawn up alongside the tube. But as the two men from the Swan boarded the little craft, their eyes met that same scene of desolation that they had encountered upon her mother ship. A quick test showed she had oxygen—plenty of it. And yet, across the floor of the car were the bodies of Jackson and Manning.