In the horse, =acute peritonitis= is unknown, save as the result of operation; then its fury takes possession of the cavity and generally refuses to yield to medicine. It is different, however, with chronic peritonitis, which, though not a common disorder, is too often encountered to be esteemed a rare disease. It is, when early noticed, tractable; but the earlier symptoms are generally not understood. The first sign is a ragged coat and a tender state of the abdomen; the horse, which was passive previously, now shrinks from the curry-comb; snaps and kicks at him who dresses it. Such actions are viewed as denoting a return of spirit. Intending to encourage the favorite quality of the stable, the flank is violently struck or slapped by the servant; and the indication forced from a dumb animal by agony, is by grooms regarded as the proof of reviving animation. Masters should, in justice to themselves if from no higher motive, visit the stable more frequently than is their custom. The horse is all gentleness and simplicity; a groom only knows less about the animal than a child, for he has acquired notions which induce him to misinterpret plain actions. Every owner of a stable should learn to feel and count the horse's pulse; he should be acquainted with the normal standard and its healthy character; chronic peritonitis might then early be discovered. The pulse under this disease is hard and small, it vibrates about sixty times in a minute. The head is pendulous; the food is oftener spoiled, rather scattered about than eaten; the membranes are pale and the mouth is dry; pressure upon the abdomen elicits a groan, and turning in the stall always calls forth a grunt. When such symptoms are observed, the food should be small in bulk, but nutritious in quality; no work should be imposed; the medicine should be tonic and alterative. Strychnia A quarter of a grain, worked gradually up to one grain. Iodide of iron Half a drachm, worked gradually up to one drachm and a half. Extract of belladonna One scruple. Extract of gentian A sufficiency. Powdered quassia A sufficiency. Make into a ball; give one at night and at morning. Small blisters should succeed each other upon the abdomen; but as these cases are always tedious and very much depends upon the constitution of the animal, charity alone should propose such a disease for treatment, as the general termination of the malady is incurable dropsy of the abdomen.