Silage has not been generally fed to horses, partly on account of a certain amount of danger which attends its use for this purpose, but still more, perhaps, on account of prejudice. In many cases horses have been killed by eating moldy silage, and the careless person who fed it at once blamed the silage itself, rather than his own carelessness and the mold which really was the cause of the trouble. Horses are peculiarly susceptible to the effects of molds, and under certain conditions certain molds grow on silage which are deadly poisons to both horses and mules. Molds must have air to grow, and therefore silage which is packed air-tight and fed out rapidly will not become moldy. If the feeder watches the silage carefully as the weather warms up he can soon detect the presence of mold. When mold appears, feeding to horses or mules should stop immediately. It is also unsafe to feed horses frozen silage on account of the danger of colic. * * * To summarize, silage is safe to feed to horses and mules only when it is made from fairly mature corn, properly stored in the silo. When it is properly stored and is not allowed to mold, no feed exceeds it as a cheap winter ration. It is most valuable for horses and mules which are not at heavy work, such as brood mares and work horses during the slack season. With plenty of grain on the cornstalks, horses will keep in good condition on a ration of 20 pounds of silage and 10 pounds of hay for each 1,000 pounds of live weight. PREPARATION OF FEEDS. Feed is prepared for any of the following reasons: To render it more easily eaten; to make it more digestible; to economize in amount; to give it some new property; and to preserve it. We have already spoken of the preparation of drying, and need not revert to this again, as it only serves to preserve the different feeds. Drying does, however, change some of the properties of feed, _i. e._, removes the laxative tendency of most of them. The different grains are more easily eaten when ground, crushed, or even boiled. Rye or wheat should never be given whole, and even of corn it is found that there is less waste when ground, and, in common with all other grains, it is more easily digested than when fed whole. Hay and fodder are economized when cut in short pieces. Not only will the horse eat the necessary quantity in a shorter time, but it will be found that there is less waste, and the mastication of the grains (whole or crushed) fed with them is insured. Reference has already been made to those horses that bolt their feed, and we need only remark here that the consequences of such ravenous eating may be prevented if the grains are fed with cut hay, straw, or fodder. Long or uncut hay should also be fed, even though a certain quantity of hay or straw is cut and fed mixed with grain.