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 employed than their mates, develop less strength. In the end, slight atrophies result which derange the precise equality of the strides, steps, and gaits. The horse does not go sound, and is condemned as lame. Naturally, such "side" is a more serious matter for a horse than for a man, since the horse gets its utility from its locomotion and the movement of its four members.

This inequality, this atrophy, is not easily located by the non-professional, often not even by the veterinarian. The inequality or the lameness is apparent. But which leg is at fault, or where in the stride the derangement occurs, is, in the opinion of competent veterinarians, a very complicated problem. The cause may be in a hind leg, while the effect appears in a perfectly sound front one.

Recognizing the importance of this matter, and interested also because of my ownership of a great variety of horses in my different schools, I have studied the problem deeply, and as the result of wide experience aided by experiments, I have developed a system which was adopted by General P. H. Sheridan, after a favorable report from a board of army officers.

This system involves locating the derangement, discovering its causes, and then repairing the defect by means of the low airs of the high school. A complete account is beyond the scope of the present work, but I shall be glad to supply complete information to the interested reader. I touch upon