This disease is well known among horse dealers, and in the stables of all our large cities. It is not so often found in the open country, but cases occur where green or young horses are taken from pasture and subjected to the closer atmosphere and changed diet of a warm stable. It is generally found among green horses who have been brought from the country to our large cities for sale or use, and quite, a large proportion of all such horses are more or less seriously affected by it. The disease is really a Catarrhal Influenza, whose symptoms are variously modified and only possibly received the now generally accepted name of PINK EYE, from a frequent appearance of the eye in the earlier stages of the malady. The supposed causes have been sufficiently above hinted. SYMPTOMS.—There is a wide diversity in the symptoms, but the more common manifestations are as follows: The horse is first observed to be _dumpish_, dull and disinclined to move, or moving clumsily, and looks as if he had been sick; the vessels of the eye are distended, turgid, the inner lid and corners being unnaturally red (whence, probably, the name), the lids become swollen, the animal shrinks from the light and tears trickle over the eyelid, and lumps of purulent matter occasionally gum up or fill the angles. The head seems heavy and hangs down, or he rests it upon the manger. First one hind leg and then the other swells and becomes infiltrated with fluid, extending from the fetlock up and filling the sheath, and often along under the belly with an immense infiltration of fluid. This swelling is considered characteristic, comes on suddenly, affects the whole limb, groin and sheath. The hair from the first looks unhealthy, and has a rough feeling; the ears, nose and limbs are cold or wet, according to the stage of the disease. The appetite is poor from the first, and an attempt to swallow shows that the throat is sore; the fauces will be found inflamed, the tongue is foul, thickly coated, and saliva runs freely, though in some cases the mouth is dry and feverish; the dung is voided in small quantities, as all the functions seem torpid. In some cases the glands of the neck become involved, tenderness and swelling is found on examination, and this swelling may soften and terminate in an abscess under the jaw. There is not unfrequently a cough. After a few days, a discharge from the nose sets in, which is considered a favorable crisis. TREATMENT.—The patient should have the benefit of a pure atmosphere—the more elevated, pure and uncontaminated, the better to arrest blood deterioration—and be covered according to the temperature of the stable and season. The limbs may be rubbed and clothed if cold, but not rubbed if they are hot and feverish. In the febrile stage, the natural covering is sufficient. Fat horses need but trifling food, and bran mashes, scalded spout feed, or green food in moderation are best until the turn of the disease.