The telegraph manual: a complete history and description of the semaphoric, electric and magnetic telegraphs of Europe, Asia, Africa, and America, ancient and modern.

STEINHEIL S PARATONNERRE. 573
ribbon paper was burnt. The fire stopped at the rollers of the
apparatus; no other injury was done. The station was about
one fourth of a mile from the place where the ball fell upon
Fig. 7.
the wire. Whether or not the ball lightning did the injury in
the station I am unable to say, but I presume it did. The
end of the earth wire was a little burnt; the wires in the
station were properly adjusted for the night.
STEINHEILIS PARATONNERRE.
In 1846 Dr. Steinheil constructed the following arrangement for the Austro-Germanic telegraph lines.
Fig. 8.
P
The wire a a passes over the station house in which the
telegraph instruments are placed, as seen in the figure. On