A horse fed with grain, or watered, when warm, is liable to be foundered; and if not so fed as actually to be foundered, he will gradually grow stiff. Horses are liable to take cold by any unreasonable exposure to the weather, in the same circumstances as men, and the effects on health and comfort are very similar. A horse having become warm by driving, should never stand a minute without a blanket. When a man goes from a heated room, or in a perspiration, into inclement weather, he takes cold the moment the cold or storm strikes him: in a few moments the effects on the pores of the body are such that there is no particular exposure. It is so with a horse. He takes cold when you are only going to allow him to "stand but a minute," and during that time you leave him uncovered. If you are under the necessity of doing an unusual day's work with a horse, do not feed him heavily on that day. Unusual feed the day before and the day after will do him good; but on the day of excessive work it injures him. Never feed horses too much; they will often eat one third more than is good for their health. Keep the bottom of the trough in which you feed your horses grain, plastered over with a mixture of equal parts of salt and ashes, that they may eat a little of it when they please. When the water of your horse becomes thick and yellowish, or whitish, give him a piece of rosin as large as a walnut, pulverized and put in his grain. If a horse has the heaves, give him no hay or oats; corn, ground or soaked, should be his only grain, and green corn-fodder in summer, and cornstalks, cut fine, with a little warm water on them, mixed with meal, should constitute his only food. All except a few of the most confirmed and long-standing cases of heaves are _entirely relieved_ by this course of feeding, and that relief is permanent as long as the feed is continued, and it frequently effects a cure so radical that the disease will not return on a change of food. To bring up horses that have had hard usage and poor feed, and to secure growth in colts, feed them milk. The milk of a butter-dairy is not more profitably used in any other way, than fed to horses and colts. Give them no water for two or three days, and they will readily learn to drink all the sour, thick milk you will give them. Colts will grow faster on milk than on any other food. Horses should be often rubbed down and kept clean, and when put in the stable wet, they should be rubbed dry. It is very essential to the health of a horse that he have pure air. Stables in this country are usually airy enough. But if the stable be tight, it should be well ventilated. The gases from a wet stable floor are injurious. Disinfecting agents are good remedies; a little plaster-of-Paris spread over a stable-floor is very useful. These brief directions, followed, will prevent most of the diseases to which horses are subject; or in case a horse be attacked, he will have the disease lightly, as temperate men do epidemics.