The University football squad was given a long secret practice yesterday, and the men were kept on the field until darkness revented further work. Captain Burr was in football clothes, and ran several times around the field. He will probably not line up in signal practice for a couple of days, but will continue exercise to get back into good condition. There was no scrimmage, but the substitutes were lined up against the first team to work out defensive formations. All the regular men were on the field yesterday. Dunlap, who was slightly injured in Saturday's game, did not go into the signal work. Withington took his place at left guard.