[Transcriber's note: This is a rule 6 clearance. PG has not been able
to find a U.S. copyright renewal.]
_For my drinking uncle DON and, of course MARIAN_
_Historical Note_
In the founding days of Rhine Institute the need arose for a new
punctuation mark which would indicate on the printed page that the
passage was of mental origin, just as the familiar quotation marks
indicate that the words between them were of verbal origin. Accordingly,
the symbol # was chosen, primarily because it appears on every
typewriter.
Up to the present time, the use of the symbol # to indicate directed
mental communication has been restricted to technical papers, term
theses, and scholarly treatises by professors, scholars, and students of
telepathy.
Here, for the first time in any popular work, the symbol # is used to
signify that the passage between the marks was mental communication.