ten o'clock
`` Is Mr. Whippleton in ? '' asked a gentleman , one day , while I was harassing my brain over the knotty problem . `` No , sir , '' I replied . `` He went out at ten o'clock , and I have not seen him since . '' `` Sorry ; I wanted to see him . '' I soon found that this gentleman was the agent of the Michigan Pine Company , in whose invoice the discrepancy of ten thousand dollars appeared . Without indicating my purpose , I made such inquiries of him as enabled him to give the information I wanted .