“Or he may have fled,” said Utterson, and he turned to examine the door in the bystreet. It was locked; and lying near by on the flags, they found the key, already stained with rust.

“This does not look like use,” observed the lawyer.

“Use!” echoed Poole. “Do you not see, sir, it is broken? much as if a man had stamped on it.”

“Aye,” continued Utterson, “and the fractures, too, are rusty.” The two men looked at each other with a scare. “This is beyond me, Poole,” said the lawyer. “Let us go back to the cabinet.”

They mounted the stair in silence, and still with an occasional awestruck glance at the dead body, proceeded more thoroughly to examine the contents of the cabinet. At one table, there were traces of chemical work, various measured heaps of some white salt being laid on glass saucers, as though for an experiment in which the unhappy man had been prevented.