This distinguished scientist has expounded his
views in a book entitled “Verschwinden und Seine Theorie,” which has
attracted some attention, “particularly,” says one writer, “among the
followers of Hegel, and mathematicians who hold to the actual existence
of a so-called non-Euclidean space—that is to say, of space which has
more dimensions than length, breadth, and thickness—space in which it
would be possible to tie a knot in an endless cord and to turn a rubber
ball inside out without ‘a solution of its continuity,’ or in other
words, without breaking or cracking it.”

Dr. Hem believes that in the visible world there are void places—_vacua_,
and something more—holes, as it were, through which animate and inanimate
objects may fall into the invisible world and be seen and heard no more. The theory is something like this: Space is pervaded by luminiferous
ether, which is a material thing—as much a substance as air or water,
though almost infinitely more attenuated. All force, all forms of energy
must be propagated in this; every process must take place in it which
takes place at all. But let us suppose that cavities exist in this
otherwise universal medium, as caverns exist in the earth, or cells in a
Swiss cheese. In such a cavity there would be absolutely nothing. It
would be such a vacuum as cannot be artificially produced; for if we pump
the air from a receiver there remains the luminiferous ether. Through
one of these cavities light could not pass, for there would be nothing to
bear it. Sound could not come from it; nothing could be felt in it. It
would not have a single one of the conditions necessary to the action of
any of our senses. In such a void, in short, nothing whatever could
occur. Now, in the words of the writer before quoted—the learned doctor
himself nowhere puts it so concisely: “A man inclosed in such a closet
could neither see nor be seen; neither hear nor be heard; neither feel
nor be felt; neither live nor die, for both life and death are processes
which can take place only where there is force, and in empty space no
force could exist.”  Are these the awful conditions (some will ask) under
which the friends of the lost are to think of them as existing, and
doomed forever to exist? Baldly and imperfectly as here stated, Dr. Hem’s theory, in so far as it
professes to be an adequate explanation of “mysterious disappearances,”
is open to many obvious objections; to fewer as he states it himself in
the “spacious volubility” of his book. But even as expounded by its
author it does not explain, and in truth is incompatible with some
incidents of, the occurrences related in these memoranda: for example,
the sound of Charles Ashmore’s voice. It is not my duty to indue facts
and theories with affinity. A.B. FOOTNOTES