Opowieści Katapulosa

Space explorer Katapulos tells of his adventures, including visiting a planet where inhabitants eat exclusively fissile elements, and a planet inhabited by two subspecies (one with tiny heads, one with tiny bodies) living in symbiosis.

Consists of a short framing-device introduction, and two sub-stories, titled "Uranofagia" and "Bunt". These two sub-stories were also published as separate stories.