When a mad dog has entered a fold, it is often difficult to determine which sheep have been bitten and which remain untouched. Careful examination, one by one, should be made; still uncertainty remains. The symptoms appear from two to ten or twelve weeks after attack, and are similar to those which appear in other animals. The sheep annoy and chase each other, cease to feed, lose flesh, are restless, and manifest strong and unnatural sexual desire. Ewes become stupified and paralyzed, and die, often without a struggle. Lambs have convulsive fits, terminated by death. Rams and wethers, butt their heads against the ground, palings, banks and one another; running full tilt, with great violence and frequency, so as to tear the skin from their foreheads. They usually die in from 3 to 6 days. TREATMENT.—A.A., should be given every day, to all the flock, for a few days, then once a week for several weeks. If an animal develops the symptoms it should be killed at once, since there is no known cure. However few animals or persons bitten by supposedly mad dogs ever develop the disease. Dizziness, Staggers, Sturdy, Turn-Sick, Gid. This is a very dangerous and not infrequent disease. Its immediate cause is the presence of a small worm, inclosed in a hydatid or sack of fluid, and located either within the substances of the brain, or beneath the bones of the cranium. These hydatids vary in size, number and position, being found on the right or left side, indicated by the animal turning to the right or left, or in the centre of the median line, in which case it may turn to either side, or not at all, the animal carrying the head down. When the hydatid occupies the back of the head, the animal holds the head high, and runs straight forward, throwing itself on any object it meets. SYMPTOMS.—As above indicated, the symptoms consist of various forms of turning, whirling around or standing still, etc. At first, when the hydatids are small, there may be but little or nothing to indicate their presence; but as they grow larger, they press upon the bone, and even enlarge or remove a great portion of it. One side of the head may be enormously enlarged, or the bone become quite thin, so that the situation of the cyst may be thus known, and sometimes a small hole may be discerned. The sacks are more frequently on the left side.