“Not fastened down,” he muttered. “I wonder what—Oh, no: one can’t do that.”

He hastily picked up the pocket-book, and thrust the note back into its receptacle, but snatched it out again, opened it quickly, and read half aloud certain of the sentences which caught his attention—“‘Granite closet behind book cases—vault under centre of study—big granite chest’.”

“Good heavens!” he said, after a pause, during which he read through the memorandum again; then refolding it and returning it to the envelope, he hastily placed the writing in its receptacle, and in turn this was put in the pocket-book. Lastly, the book was returned to the pouch in the belt, which latter was thrust hastily into one of the drawers of the writing-table, the key turned and taken out.

“Give it to Mademoiselle Claude,” he said, with a half laugh. “What an awkward thing if I had been tempted to behave as some would have done under the circumstances.”

He took out a delicate lawn handkerchief, unfolded it, and wiped the perspiration from his forehead, and then proceeded to do the same to his hands, which were cold and damp.

“That coffee is strong,” he said, “or it is my fancy; perhaps the place is too warm.”

He walked up and down the room two or three times, gazing anxiously at the bookshelves, and then at the table, where the floor was covered with a thick Turkey carpet; but he turned away and refilled his cup with coffee and brandy, found that his cigar was out, and threw the stump away before helping himself to a fresh one, and smoking heavily for some time, evidently thinking deeply.

Then, apparently unable to resist the temptation, he rose and walked to the door, opened it and listened, found that all was silent, closed it again, and after glancing at his patient, who was sleeping heavily, he hastily drew out the key, opened the drawer, and, after a momentary hesitation, took out the belt.

In another minute, the yellow looking memorandum was in his hands, being studied carefully before it was restored to its resting-place, and again locked up.

“I did not know I had so much curiosity in my nature,” he said, with a half laugh. “Well, the study of mankind is man, doesn’t some one say, and I’m none the worse for a little extra knowledge of a friend’s affairs. I might be called upon to give advice some day.”