A one year old Hereford steer was admitted to the Stange Memorial Clinic, Jan. 5, 1941. The left eyeball was protruding from the orbit, and there was swelling beneath the skin, above and below the eye. The history given was that the steer has been dehorned and infection had entered the frontal sinus. Such a history suggested the swelling resulting from the infection in the sinus had pushed the eyeball out of its bony orbit.