_Symptoms_: The whole body may swell through a small puncture in the skin, which often cannot be found when a clog’s coat is thick. The emphysema may be confined to the body or to the head, or even to one or more limbs. In bad cases the dog swells out of all recognition. He is unable to move, or does so with great difficulty; and when the head is affected, the eyes are closed, the ears perhaps an inch thick, and breathing is difficult. The swelling is soft, pits on pressure, and at the same time a crackling noise is made. When affecting the lungs, the breathing is heavy and laboured, and on auscultating the chest a distinct loud, crackling noise is heard. The heart is generally affected, its action, as a rule, being very weak; and there is a chronic, husky cough. _Treatment_: In cases of general emphysema, if the swelling is not large it may be left alone, for it will gradually disperse of its own accord; but when it is large, the original wound, if it can be found, should be dilated, or one or more fresh ones made, and the air which has accumulated under the skin pressed out. The wound should afterwards be cleaned with a solution of some disinfectant like Pearson’s fluid or boracic acid, dried, then covered over with some antiseptic gauze, and a bandage or coat applied. Stimulants, as brandy, should be administered. Treatment of emphysema of the lung is not very satisfactory, especially when the patient is very old, which is generally the case; but some relief may often be given by careful dieting. No food to distend the stomach should be allowed, as pressure on the chest from a distended stomach always increases the difficulty in breathing, therefore a concentrated food like meat should be given, and it is best raw. It should be given in small quantities three times a day. Sedative medicine, unless the cough is very troublesome, is best avoided, but some such mixture as the following may be tried:— _Recipe_: Tr. Digitalis, 1 drachm. Tr. Nux Vomica, 1 drachm. Ipecacuanha Wine, 2 drachms. Water to 6 ounces. From half a teaspoonful to a tablespoonful[1] three times a day one hour after food. Inhalation of steam gives relief. The bowels should be kept well opened by occasional doses of aperient medicine. =Enema=: Enemas are necessary in cases of stoppage of the bowels; they are also very useful to relieve constipation; and for dogs that are very ill it is much better to give a small enema rather than a dose of purgative medicine, which often causes sickness, which one particularly wants to avoid when the patient is weak.