Lameness is the first symptom to attract attention. It is slightly marked, unless the bruising has been overlooked until suppuration has set in. It affects only one or two limbs, and is rarely accompanied by general disturbance, such as loss of appetite, fever, exhaustion during work, etc. Locally the claw or claws affected are abnormally sensitive to percussion of the wall, and particularly to compression of the sole. The parts are hot to the hand, and thinning the sole with a knife shows little perforations, irregular points and crevices in the horn. One may also find softening, infiltration and hæmorrhage within the horn similar to those of corn in the horse, undermining of the sole over limited areas, and sometimes suppuration, if the animals have been forced to work when lame. Complications like necrosis of the velvety tissue or of the bone, though comparatively common in the horse, are rare in oxen. =Diagnosis= is not difficult provided the history of the case is known. Confusion with laminitis is scarcely possible, for the gait of this lameness and the local symptoms are all different. Examination of the sole will usually dispel any remaining doubt. =Prognosis.= The prognosis is favourable. When the horn is simply softened and a blackish liquid transudes, the lesion is trifling; if the discharge is reddish grey the lesion is graver, and implicates all the velvety tissue; finally, separation of the horn from the secreting membrane and the discharge of true pus point to death of the keratogenous tissue or of the bone. =Treatment= should be commenced by carefully thinning the sole around the wound and applying moist antiseptic dressings or cold affusions. Removal of loose portions of horn hastens repair by allowing discharge, which has accumulated between the living tissues and the horn itself, to escape freely. The extirpation of necrotic tissue and the application of surgical dressings are only called for in specially grave cases. This treatment usually gives good results. The acute complications which are so common and so dangerous in the horse seldom occur in the ox. Most of these operations can be performed without casting, provided the animal is placed in a trevis or is sufficiently secured. LAMINITIS. Laminitis is characterised by congestion, followed by inflammation of the horn-secreting tissues of the foot. It is now rare in oxen and very seldom assumes an acute form. The slow pace at which animals of the bovine species move may sufficiently explain this rarity; nevertheless, prolonged travel on stony roads with heavy vehicles, rapid and repeated marches to towns or important fairs, are sufficient to produce attacks. Before the days of railways, and for some time after their introduction, in Britain cattle were travelled by road, and laminitis was common.