“I know, but there are other things. Probably my chemical flasks and vials aren't injured. Glass is practically imperishable. And if I'm not mistaken, the bottles must be lying somewhere in that rubbish heap over by the window.”

He left her wondering, and knelt among the litter. For a while he silently delved through the triturated bits of punky wood and rust-red metal that now represented the remains of his chemical cabinet.

All at once he exclaimed: “Here's one! And here's another! This certainly is luck! H-m! I shouldn't wonder if I got almost all of them back.”

One by one he found a score of thick, ground-glass vials. Some were broken, probably by the shock when they and the cabinet had fallen, but a good many still remained intact.

Among these were the two essential ones. By the last dim ghost of light through the window, and by the sense of touch, Stern was able to make out the engraved symbols “P” and “S” on these bottles.

“Phosphorus and sulphur,” he commented. “Well, what more could I reasonably ask? Here's alcohol, too, hermetically sealed. Not too bad, eh?”

While the girl watched, with wondering admiration, Stern thought hard a moment. Then he set to work.

First he took a piece of the corroded metal framework of the cabinet, a steel strip about eighteen inches long, frail in places, but still sufficiently strong to serve his purpose.

Tearing off some rags from his coat-sleeve, he wadded them together into a ball as big as his fist. Around this ball he twisted the metal strip, so that it formed at once a holder and a handle for the rag-mass.

With considerable difficulty he worked the glass stopper out of the alcohol bottle, and with the fluid saturated the rags. Then, on a clear bit of the floor, he spilled out a small quantity of the phosphorus and sulphur.