=Pericarditis (Inflammation of the Heart’s Sac)=: _Symptoms_: It is difficult to detect it in the dog. There is some pain on the left side of the chest, the pulse is quiet and small, the temperature is two or three degrees above normal, the breathing is short and quick, and there is a dry cough. If the heart be examined with a stethoscope, a friction sound is heard with each movement of the heart. When fluid collects in the sac, as it often does, the usual heart sounds are almost inaudible. _Treatment_: Apply hot linseed-meal poultices to left side of chest, keep the bowels freely opened with purgative medicine. If temperature is very high, give the following mixture:— _Recipe_: Salicine, 2 drachms. Tr. Digitalis, 1½ drachms. Simple Syrup, 1 ounce. Water to 6 ounces. From one teaspoonful to a tablespoonful[1] three or four times a day. When fluid collects, give from half[1] to two grains of iodide of potassium in water three times a day. =Peritonitis=: _Symptoms_: Generally the result of some injury, but may be the result of a chill. The abdomen is hard and very painful to the touch. The breathing is quick, and the dog often utters a grunt with each breath. The pulse is very quick, and the temperature rises to 105 degs. F. or over, and the patient vomits frequently, especially after taking food or even water, and quickly collapses, death often taking place within twenty-four hours of the commencement of the illness. _Treatment_: Apply flannels wrung out in hot poppy-head tea, made by boiling for ten minutes a couple of crushed poppy-heads in a quart of water. Give from five to twenty drops[1] of laudanum every four hours in water; if the dog cannot retain it, inject under the skin from the twentieth to the eighth of a grain[1] of acetate of morphia, in a few drops of water, which may be repeated in six hours. Give Vichy water and milk in equal parts to drink, and a little Brand’s essence occasionally. =Perostitis (Inflammation of Membrane covering Bone)=: _Symptoms_: Generally result of injury. Parts are very painful and swollen, the skin covering the inflamed spot discoloured, very often purple. An abscess may form. In these cases there is a good deal of constitutional disturbance, the temperature is high, perhaps 104 or 105 degs. F., the pulse quick, and the dog refuses food. Blood poison may result. _Treatment_: Keep patient absolutely quiet, and give a good purge. Apply following lotion constantly on lint:— _Recipe_: Goulard’s Extract of Lead, 1 drachm. Laudanum, 2 drachms. Water to 6 ounces. Or an ice-bag may be applied. If an abscess forms, it must be freely opened, and afterwards apply hot linseed-meal poultices, dusted over with powdered charcoal. =Perspiration=: