The Rock Bred Evolution in Reverse! Devil's Asteroid appeared in the July 1941 issue of Comet. "It was not very large, as asteroids go, but about it clung a silvery mist of atmosphere. Deeper flashes through the mist betokened water, and green patches hinted of rich vegetation. The space-patroller circled the little world knowledgeably, like a wasp buzzing around an apple. In the control room, by the forward ports, the Martian skipper addressed his Terrestrial companion."