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

TIHE APPARATUS AND MANIPULATION. 355
place, give a few explanations in regard to th3 practical manipulation of the apparatus.
Fig. 1 represents the apparatus placed upon a table ready
for operation. The table is about four feet high and six feet
long. The line wire enters the station upon the right, traverses
Fig. 1.
a small relay magnet, sitting on the right of the table; it then
passes through the key, and thence to the stylus, which rests
upon the disk; from beneath the disk, the wire is conducted to
the earth.
The relay magnet upon the right has attached to it a circular
piece of glass, which serves as a bell, when struck by a rod
attached to the armature. With this, the call is made and the
operator is thus notified when and by whom wanted. The
clockwork on the centre of the table is to put in motion the
disk, as seen upon the left. Upon the disk is laid the chemically prepared paper, which is kept damp. It lies on, or connects
with the metallic disk. The stylus lies upon the moist paper,