The Seniors will play the Sophomores in the final game of the interclass series on Soldiers Field at 4 o'clock this afternoon. Both teams have shown in preliminary work an aggressiveness in their offense and an ability especially in end running which should make the game an interesting one. The Senior team this week has spent its practices in light signal work and in perfecting their formation and trick plays. The Sophomores had long signal practice yesterday, but no line-up was held. The probable line-up of the teams is as follows: 1903.  1905. Percival, r.e.  l.e., Rowley Blaikie, r.t.  l.t., Webster Hanavan, r.g.  l.g., A. Brooks Loring, c.  c., Joy Corbett, l.g.  r.g., R. A. Derby Cudahy, l.t.  r.t., Gring Ruhl, l.e.  r.e., G. Brooks Pier, q.b.  q.b., W. M. Tilden Bullivant, r.h.b.  l.h.b., Dall M. B. Stone, l.h.b.  r.h.b., Bunting Switzer, f.b.  f.b., Robeson