This is inflammation of the lung substance proper.

Causes. - Same as in congestion.

Symptoms. - The horse stands with head down and ears generally drooping; breathes short and quick and the mouth is dry and hot. The pulse, in the beginning, is quick and strong; but grows weak as the disease progresses. If the ear is held against the side a rasping sound is heard like two pieces of dry leather rubbing together. The. horse will not lie down but remains in a standing posture. The temperature may run up as high as 106 degrees and yet not prove fatal.

Treatment. - The horse should be turned loose at once in a box stall and blanketed according to the season. He must have plenty of fresh air, but a current of air must not strike him. If the pulse is full and strong give him ten drops of tincture of aconite every two hours until the pulse begins to decrease in power and frequency, but it must not be continued after the pulse becomes weak. The aconite should be diluted and given on the tongue with a syringe. If the animal is weak and the pulse low an ounce of spirits of nitre should be given every two hours, instead of aconite, for the first twelve hours, then give it every four hours, then three times a day, as needed. If there is much distress in breathing add one-half ounce of laudanum to each dose. From the first, give two drachms of nitrate of potash and one drachm of sulphate of cinchonida every four hours until the fever is broken, then three times a day while convalescent. Also, from the first, a liniment made of equal parts of linseed oil, turpentine, and ammonia should be rubbed into the sides of the chest once every hour until the skin becomes sore, then just often enough to keep it so. I consider these last two most important of all. A pail of fresh water and a little hay should be within reach at all times. Bran, oats, or corn, as the animal eats best, should be given judiciously, but not left before it long at a time if it does not eat it. If the legs are cold, rub and bandage them. Much depends upon the good judgment of the nurse in treating this disease.