HYGROMA OF THE TROCHANTER OF THE FEMUR. This condition is rare, except in thin milch cows kept under bad hygienic conditions and insufficiently supplied with bedding. Continual bruising of the prominences of the quarters whilst the animal is lying is the usual cause. This hygroma forms a hemispherical swelling covering the trochanteric prominence. Movement is interfered with, and the stride is shortened. The condition can only be confused with the diffuse swellings due to periarthritis in the coxo-femoral region, which frequently occur in cows suffering from infectious pseudo-rheumatism. =The prognosis= is somewhat grave, for in case of suppuration the insertions of tendons and fascia into the summit of the trochanter may become necrotic. =Treatment.= The first point is to supply the animal with ample clean bedding. The swelling may be repeatedly blistered. If considered necessary, a puncture may be made under antiseptic precautions, the fluid drawn off, and the cavity washed out; but it is better to avoid opening the parts with a bistoury, on account of the danger of suppuration and of necrosis of the tendons and aponeurotic tissues in the neighbourhood. HYGROMA OF THE STIFLE. Hygroma of the stifle or of the patella appears under the skin, outside the external ligament of the femoro-tibial articulation. It usually follows repeated abrasion when lying down, especially if the paving of the stalls is rough or irregular. The swelling varies in size from a hen’s egg up to that of a child’s head, and exhibits fluctuation throughout. [Illustration: $1] =The prognosis= is somewhat serious, for here again complications may result from necrosis of neighbouring aponeuroses. Some authors recommend passing a seton dressed with some irritant material through the swelling. Aseptic puncture, however, seems preferable, followed by washing out of the cavity and the application of a blister. HYGROMA OF THE POINT OF THE HOCK. This hygroma usually results from blows with the ox-goad, which cause inflammation of the subcutaneous connective tissue and œdematous infiltration extending down the leg. Afterwards the slightest injury, or even the friction due to the animal lying down, causes liquid to collect and an hygroma to form. [Illustration: $1] This hygroma is readily infected and often suppurates; it then becomes very sensitive, producing intense lameness. More frequently, however, under the influence of prompt treatment, the liquid is absorbed, the layers of subcutaneous connective tissue become hardened, and undergo more or less extensive induration. HYGROMA OF THE POINT OF THE STERNUM. Hygroma of the point of the sternum is a rarity. It only occurs in thin animals in which the point of the sternum is prominent, and which are confined to stables with rough floors and provided with insufficient bedding.