1944—One of the first science fiction stories about pantropy (the word had not yet been coined) was the short story "Desertion," by Clifford D. Simak, which appeared in the November 1944 Astounding Science Fiction. In this story, human colonists living in a domed city on the planet Jupiter are put through a biological converter that converts their bodies into the form of the indigenous Jovian lifeform called the "Lopers." The head director of the domed colony, Kent Fowler, wondering why none of those biologically converted ever come back, goes into the biological converter himself with his dog and finds that the reason they never come back is that the Lopers have brains and senses so much in advance of humans that they don't want to come back. He also finds that he is able to completely accurately telepathically communicate with his dog Towser (whose intelligence has also greatly increased) after going through the converter. He himself decides not to go back.[1]b