This plan has been in use for a long time, and on the whole has been very successful. Like other plans it has its advantages and disadvantages. Its chief disadvantage is its greater cost compared with the other methods. This arises from the higher relative price of oats and from the waste of hay which invariably occurs where hay is racked. Its chief advantage, where ordinary care is used in regulating the amount of corn given, is its comparative immunity from the production of gastro-intestinal derangements. This naturally follows from the length of time required for eating racked hay, and as a consequence the diminished liability to gastric impaction. But, as cost is an important factor in most horse establishments, this plan has very largely been replaced by the system of feeding on mixed food.