Constipation is to be regarded rather as a symptom of disease or of faults in feeding than as a disease in itself. It occurs in almost all general fevers unless the bowels are involved in local disease, in obstructions of all kinds, from feeding on dry, bulky feed, etc. In order to remove the constipation the treatment must be applied to remove the causes which give rise to it. Calves sometimes suffer from constipation immediately after birth when the meconium that accumulates in the bowels before birth is not passed. In such cases, give a rectal injection of warm water and an ounce of castor oil shaken up with an ounce of new milk. The mother's milk is the best food to prevent constipation in the new-born calf, as it contains a large amount of fatty matter which renders it laxative in its effects. It is usually better to treat habitual constipation by a change of diet than by medicine. Flaxseed is a good feed laxative. If the constipation has lasted long, repeated small doses of purgatives are better than a single large dose. INTESTINAL WORMS. [See chapter on "The animal parasites of cattle," p. 502.] RUPTURES (VENTRAL HERNIA). Ventral hernia, or rupture, is an escape of some one of the abdominal organs through a rupture in the abdominal muscles, the skin remaining intact. The rumen, the small intestine, or part of the large intestine, and the fourth stomach are the parts which usually form a ventral hernia in bovine animals. _Causes._--Hernia is frequently produced by blows of the horns, kicks, and falls. In old cows hernia may sometimes occur without any direct injury. HERNIA OF THE RUMEN.--Hernia of the rumen is generally situated on the left side of the abdomen, on account of the situation of the rumen. In exceptional cases it may take place on the right side, and in such cases it also generally happens that some folds of the intestine pass into the hernial sac. Hernias have been classified into simple or complicated, recent or old, traumatic (from mechanical injury) or spontaneous. In recent traumatic hernia there is swelling on the left side of the lower part of the abdomen. The swelling is greatest in the cases of hernia which are situated on the lower part of the abdomen. Unless an examination is made immediately after the injury has been inflicted it is difficult, and sometimes impossible, to ascertain the exact extent of the rupture, owing to the swelling which subsequently takes place. Frequently there is no loss of appetite, fever, or other general symptoms attending the injury. From the twelfth to the fifteenth day the swelling has generally subsided to such an extent that it is possible by an examination to determine the extent of the rupture.