him his engraver, Sokolow, in order that he might delineate the
appearances that should present themselves. While intent upon
examining the electrometer, a large globe of fire flashed from the
conducting rod, which was insulated, to the head of Richman, and
passing through his body, instantly deprived him of life. A red spot
was found on his forehead, where the electricity had entered, his
shoe was burst open, and part of his clothes singed. His companion
was struck down, and remained senseless for some time; the door-case
of the room was split, and the door itself torn off its hinges.

The protection of buildings from the effects of lightning, is the
most important practical application of the theory of electricity.
Conductors for this should be formed of metallic rods, pointed at
the upper extremity, and placed so as to project a few feet above
the highest part of the building they are intended to secure; they
should be continued without interruption till they descend into the
ground, below the foundation of the house. Copper is preferable to
iron as the material for their construction, being less liable to
destruction by rust, or by fusion, and possessing also a greater
conducting power. The size of the rods should be from half an inch
to an inch in diameter, and the point should be gilt, or made of
platina, that it may be more effectually preserved from corrosion.
An important condition in the protecting conductor is, that no
interruption should exist in its continuity from top to bottom; and
advantage will result from connecting together by strips of metal
all the leaden water pipes, or other considerable masses of metal in
or about the building, so as to form one continuous system of
conductors, for carrying the electricity by different channels to
the ground. The lower end of the conductors should be carried down
into the earth till it reaches either water, or at least a moist