Joseph Samachson, Ph.D., is a quiet and industrious chemist who translates technical works from difficult languages, does complicated things on the research staff of a major New York hospital and, in spare time, writes books about archeology and the ballet with his wife, Dorothy. There is, however, another area of extreme competence in the man. Under the pseudonym of "William Morrison," Dr. Samachson has for years been among the foremost writers of science fiction. When the two halves of his personality fuse, when the biochemist meets the science fictioneer, we reap such a splendid hybrid harvest as—
