_Course._ The general tendency of broken wind is to persistent aggravation, but by a judicious regimen many cases may be checked in their progress and greatly relieved, or even cured. _Treatment._ We have already seen that broken wind is virtually unknown on natural pastures where the grass is short, green and succulent. Turning out on such pastures will improve or even temporarily cure mild cases. The same may be said of the laxative systems of diet. (See that recommended for _chronic bronchitis_). Feeding on dry grain only, with a very limited supply of water, will enable many broken winded horses to do ordinary work with comparative ease and comfort. In such cases, however, improvement is only due to the empty and unclogged condition of the digestive organs and the symptoms return with all their former intensity when the original diet is restored. By way of palliation much may be secured by avoiding accidental causes of aggravation. If catarrh or bronchitis has supervened it should be treated in the ordinary way. If the stomach and bowels are overloaded and costive, a small dose of aloes and enemata will relieve. If the stable is close a free admission of air will be beneficial. The temporary excitement in these cases may be further alleviated by sedatives, of which opium and digitalis have been mostly employed. The last agent will sometimes control the breathing to such an extent that the horse may be thought to have completely recovered. Professor Dick believed that he had effected a cure in one case by the administration at a single dose of a drachm each of camphor, opium, calomel and digitalis. Temporary results only can, however, be expected from such agents, except in the case of an aggravation due to a cause acting for a limited time only, in which case the partial improvement may be lasting. By adopting such measures to check accidental complications and confining the animal to a rigid system of diet a broken winded horse may be worked with comfort to himself and his master. The aliment should be principally or exclusively of oats, bran or barley, though good succulent grass, turnips, carrots, beet, and potatoes may be allowed, as may also wheat or oat straw in limited quantity, but no hay and above all none prepared from red clover, alfalfa, sainfoin, or allied foreign plants and none that is musty or otherwise injured by keeping. No food nor water must be allowed for one or two hours before going to work, and the pace must be slow at first and gradually increased as the horse empties himself, and the breathing gets less embarrassed. If meadow hay, straw or other bulky food is allowed in small quantity this must be after the horse has returned from his day’s work. If the food above recommended is boiled or pulped, and mixed with some saccharine agent as molasses its restorative action is enhanced.