ouds, suspended in the air between the great
body of clouds and the earth, (like leaf gold in electrical
experiments,) often serve as partial conductors for the lightning,
which proceeds from one of them to another, and by their help comes
within the striking distance to the earth or a building. It therefore
strikes, through those conductors, a building that would otherwise be
out of the striking distance.
Long sharp points communicating with the earth, and presented to such
parts of clouds, drawing silently from them the fluid they are charged
with, they are then attracted to the cloud, and may leave the distance
so great as to be beyond the reach of striking.
It is therefore that we elevate the upper end of the rod, six or eight
feet above the highest part of the building, tapering it gradually to
a fine sharp point, which is gilt, to prevent its rusting.
Thus the pointed rod either presents a stroke from the cloud, or if a
stroke be made, conducts it to the earth, with safety to the building.
The lower end of the rod should enter the earth so deep as to come at
the moist part, perhaps two or three feet; and if bent when under the
surface, so as to go in a horizontal line six or eight feet from the
wall, and then bent again downwards three or four feet, it will
prevent damage to any of the stones of the foundation.
A person apprehensive of danger from lightning, happening during the
time of thunder to be in a house not so secured, will do well to avoid
sitting near the chimney, near a looking-glass, or any gilt pictures
or wainscot; the safest place is in the middle of the room, (so it be
not under a metal lustre suspended by a chain,) sitting in one chair
and laying the feet up in another. It is still safer to bring two or
three mattresses or beds into the middle of the room, and, folding
them up double, place the chair upon them; for they, not being so good
conductors as the walls, the lightning will not choose an interrupted
course through the air of the room and the bedding, when it can go
through a continued better conductor, the wall. But where it can be
had, a hammock or swinging-bed, suspended by silk cords equally
distant from the walls on every side, and from the ceiling and floor
above and below, affords the safest situation a person can have in any
room whatever; and what, indeed, may be deemed quite free from danger
of any stroke by lightning.
_The Leech, a Prognosticator of the Weather._
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