It was reprinted[2] in the 1946 collection Adventures in Time and Space, edited by Raymond J. Healy and J. Francis McComas, and in Isaac Asimov's anthology of 1930s science fiction Before the Golden Age.
The professor will monitor the assistant's fate through a device that receives his sense of sight and sound, and intends to eventually follow suit and set himself shrinking as well, although they would never meet again due to the infinitesimal chance of tracing the same path through the subatomic worlds.
Though it lies within the power of some advanced races to halt his shrinking or grant him release from life (for he finds he has become immortal), none will interfere.
He makes his way to an isolated house outside the city, where a man is listening to a broadcast about the alien who touched down in Lake Erie, near Cleveland.
[3] The story makes reference to the then-recent proposal that the universe is expanding, based on the discovery that distant astronomic bodies appeared to be receding.