Introductory Note
The following story does not assume to be what is generally understood by a “novel.” It is simply the account of a strange and daring experiment once actually attempted, and is offered to those who are interested in the unseen “possibilities” of the Hereafter, merely for what it is,—a single episode in the life of a man who voluntarily sacrificed his whole worldly career in a supreme effort to prove the apparently Unprovable.