lighted space. Looking at him, Clewe was startled, amazed, and
horrified to find all that portion of his person which projected
itself into the limits of the light had entirely disappeared, and
that he was gazing upon a section of a man's trunk, brightly
illuminated, and displayed in all its internal colors and
outlines. Such a sight was enough to take away the senses of any
man, and he did not wonder that he had fainted.

"Now," said he to himself, "all the time that I was looking into
that apparent hole, never thinking that in order to see down into
it I was obliged to project a portion of myself into the line of
the Artesian ray, that portion of me was transparent, invisible.
If Bryce had come in! and then"--as the thought came into his
mind his heart stopped beating--"if Margaret had been there!"

For an hour he sat in his chair, racking his brain.

"She must see the working of the ray," he said. "I must tell her
of my success. She must see it as soon as possible. It is cruel
to keep her waiting. But how shall I manage it? How shall I
shield her from the slightest possibility of what happened to me?
Heavens!" he exclaimed, "if she had been there!"

After a time he determined that before any further experiments
should take place he would build a circular screen, a little
room, which should entirely surround the space on which the
Artesian ray was operated. Only one person at a time should be
allowed to enter this screened apartment, which should then be
closed. It would make no difference if one should become
invisible, provided there was no one else to know it.