Owing to the fact that men in past years have received ushers' tickets and sold them, it has been found necessary to pass a rule that a man who receives such a ticket and disposes of it or fails to report for duty will be placed on the blacklist. These tickets will be given out to ushers at the Athletic Office this afternoon from 2 to 5 o'clock and tomorrow morning from 8 to 10.15 o'clock. Ushers must show some identification card, when applying for their tickets, such as an H. A. A., Harvard Union, or Co-operative ticket. The list of ushers will be posted at Leavitt & Peirce's, the Union, the Athletic Office, and Phillips Brooks House by 1 o'clock today.