“No, stay!” Then with an indifferent air, “Oh, it’s not worth while; I’ll tell him presently. Come, light me upstairs.”

She entered the corridor into which the laboratory door opened. Against the wall was a key labelled “Capharnaüm.”

“Justin!” called the druggist impatiently.

“Let us go up.”

And he followed her. The key turned in the lock, and she went straight to the third shelf, so well did her memory guide her, seized the blue jar, tore out the cork, plunged in her hand, and withdrawing it full of a white powder, she began eating it.

“Stop!” he cried, rushing at her.

“Hush! someone will come.”

He was in despair, was calling out.