Poissan says he has discovered a way to make diamonds
artificially out of pure carbon in an electric furnace.
Morowitch, I believe, was to buy his secret. His dream of
millions was a reality--at least to him."

"And did Kahan and Mrs. Morowitch know it?" I asked quickly.

"I don't know yet," replied Craig, finishing the annealing.

The black glassy substance was now a dull grey.

"What's that stuff you were putting on the wire?" I asked.

"Oh, just a by-product made in the manufacture of sulphuric
acid," answered Kennedy airily, adding, as if to change the
subject: "I want you to go with me to-night. I told Poissan I was
a professor in the university and that I would bring one of our
younger trustees, the son of the banker, T. Pierpont Spencer, who
might put some capital into his scheme. Now, Jameson, while I'm
finishing up my work here, run over to the apartment and get my
automatic revolver. I may need it to-night. I have communicated
with Andrews, and he will be ready. The demonstration will take
place at half-past-eight at Poissan's laboratory. I tried to get
him to give it here, but he absolutely refused."

Half an hour later I rejoined Craig at his laboratory, and we
rode down to the Great Eastern Life Building.

Andrews was waiting for us in his solidly furnished office.
Outside I noted a couple of husky men, who seemed to be waiting