Definition, neurotic affection with digestive and respiratory disorders. Causes, no racial exemption, disease largely coextensive with leafy hay from clover, alfalfa and other leguminous plants, musty hay, cryptogams, overloading the stomach, active work on a full stomach, overdriving, bronchitis, chronic bronchitis, emphysema. Nature, a neurotic affection, starting with derangement of some part of the vagus, dilatation of the right heart, congestion of the bronchioles. Symptoms, double expiratory action, flatulence, weak, husky cough, wheezing, glairy, grayish nasal discharge, wheezing, increased resonance along the margins of the lungs, sibilant râle, heart’s impulse strong, even felt on right side, aggravation with overloaded stomach, costiveness or muggy atmosphere, improvement on laxative (green) food. Treatment, succulent green food, natural pastures, relieve any abnormal state of lungs or bowels, pure air, heart tonic, diet, arsenic, special diagnosis, guard against masking of symptoms by narcotics, privation of water, shot, lard, recto-vaginal fistula, diagnostic signs, dilated nostrils, auscultation and percussion signs of emphysema, relapse under hay and water. _Definition._ A chronic affection of the equine species, manifested by a hurried, wheezy breathing, greatly aggravated by close, muggy weather, a full stomach, certain kinds of diet, or by exercise; by a double lifting of the flank with each expiration; by a small, weak, dry cough, often occurring in paroxysms and easily excited by a drink of cold water, exposure to cold air or a fibrous quality of food; and lastly, by a marked disorder of the digestive organs. _Causes._ This disease is essentially the result of faulty feeding and working, though pre-existing diseases of the air passages and sudden violent muscular efforts no doubt occasionally contribute to its development.