His castle claimed my professional attention. For why should a man build a big steel vault and live in it unless he had portable property worth a burglar's while? I reconnoitered the place for a week before I considered myself possessed of sufficient knowledge for my undertaking. In view of what transpired at the time of my visit, a brief description of the castle, taken from my memorandum book, will prove of interest.
The structure was cigar-shaped, twenty-nine feet from base to apex and twenty feet in diameter through its largest part. It was divided into two stories by means of a steel floor, leaving head-room of ten feet in the lower story.
Four windows pierced the circular walls of the nether room, and two gave light to the room above; these six openings being guarded on the outer sides with latticework of steel.
The door was an oblong piece of boiler plate—the entire building was a shell composed of plates riveted together—hinged heavily and provided with a strong lock. As I had yet to find a lock which I could not pick, if given time enough, my designs naturally centred about the door.
I had hit upon the somewhat early hour of ten in the evening for my call at the professor's. Unless business kept him abroad I knew that he was usually in bed long before that time. If he chanced to be out, so much the better for the success of my foray.
After the patrolman had passed, I crept through the bushes and was soon busy with the lock on the steel door. It yielded with much less resistance than I had anticipated, and I was quickly within, flashing my bull's-eye lantern about me.
A circular seat upholstered in leather ran around the wall, and a table bearing an unlighted oil lamp stood in the centre of the floor. I had barely completed a hasty survey when a crunch of footsteps on the graveled walk without smote on my ears.
Without loss of a moment I snapped the lantern shut and darted up the iron stairway to the room above. It is needless to say that I was very much put out because of the interruption. I was a hard man in those days, and such an occurrence was apt to anger me and make me say things.
Lying flat on the floor with my face to the stair opening, I had a fairly good view of the circular chamber below. The professor had been abroad and not in bed, for he appeared now, ushering in callers.
Four gentlemen, all of distinguished mien and important bearing, followed the owner of the castle, and began glancing about with ill-concealed amusement.