"It is really astonishing," continued the Apparition, "how little you
people have learned about electricity. It is an Earth element that
has existed since the Earth itself was formed, and if you but
understood its proper use humanity would be marvelously benefited in
many ways."

"We are, already," protested Rob; "our discoveries in electricity have
enabled us to live much more conveniently."

"Then imagine your condition were you able fully to control this great
element," replied the other, gravely. "The weaknesses and privations
of mankind would be converted into power and luxury."

"That's true, Mr.--Mr.--Demon," said the boy. "Excuse me if I don't
get your name right, but I understood you to say you are a demon."

"Certainly. The Demon of Electricity."

"But electricity is a good thing, you know, and--and--"

"Well?"

"I've always understood that demons were bad things," added Rob, boldly.

"Not necessarily," returned his visitor. "If you will take the
trouble to consult your dictionary, you will find that demons may be
either good or bad, like any other class of beings. Originally all
demons were good, yet of late years people have come to consider all
demons evil. I do not know why. Should you read Hesiod you will find