The brilliant Dr. Bird might well give Sherlock Holmes a run for his money when solving cases that involved modern science as does the case of the money that disappeared from a teller’s cage right before his eyes. Alas, the solution involved no time travel, but it did involve a time-related phenomenon made famous in a story by an author whose notoriety in sf circles exceeds even that of Holmes’s creator.

Capt. Meek’s hero, Dr. Bird (an agent of the Bureau of Standards), had at least one minor run-in with time travel in this story of underground molemen (who excavate their tunnels by time travel) who have been duped by the evil Saranoff into serving as a base for Saranoff’s attacks on the southwestern United States (as well as an attack on Dr. Bird’s brain, which is in peril of being sent back in time).