Yes; because the lightning is apt to strike the highest object.
Of what should the point of the rod be made?
The point should be made of silver or platinum, so that it will always remain bright.
Should the rod extend deep into the ground?
The rod should extend four or five feet beneath the surface of the earth.
Why should ashes or charcoal be put around the bottom of the rod?
Because they are good conductors and will help to conduct the lightning into the earth.
How large should the lightning-rod be?
If made of iron, the lightning-rod should be about three-fourths of an inch in diameter.
Why is glass put around the rod where it is joined to the building?