LATE PRACTICE Pittsburgh. Oct. 20. (ff) — Pitt's football Panthers remained on tlie practice field until after dark tonight as Coach J-cck Sutherland continued to drill his charges for the Notre Dame game at South Bend next Saturday. The, freshmen, who use Irish plays, were ncrimiuaged aga nst. Jimmy Clark, who scored twice on the Notre Damo reserves last year, may play fullback this week-end In place of Johnny Luch.