electric lights.

So he experimented in a rather haphazard fashion, connecting this and
that wire blindly and by guesswork, in the hope that he would strike
the right combination. Then he thought the combination might be
right and there was a lack of power; so he added other lines of wire
to his connections, and still others, until he had employed almost
every wire in the room.

Yet it would not work; and after pausing a moment to try to think what
was wrong he went at it again, putting this and that line into
connection, adding another here and another there, until suddenly, as
he made a last change, a quick flash of light almost blinded him, and
the switch-board crackled ominously, as if struggling to carry a
powerful current.

Rob covered his face at the flash, but finding himself unhurt he took
away his hands and with blinking eyes attempted to look at a wonderful
radiance which seemed to fill the room, making it many times brighter
than the brightest day.

Although at first completely dazzled, he peered before him until he
discovered that the light was concentrated near one spot, from which
all the glorious rays seemed to scintillate.

He closed his eyes a moment to rest them; then re-opening them and
shading them somewhat with his hands, he made out the form of a
curious Being standing with majesty and composure in the center of the
magnificent radiance and looking down upon him!