SHOEING. 



By John W. Adams' A. B., Y. M. D.. 



Professor of Surt/cri/ ami Lecturer on fihoelnfi, yeteriiHinj l)i intrtmeiil, I tiiversity 



of J'einisi/Iranitt. 



Bad and indifferent shoeinoj so frequently leads to diseases of the 

 feet and in irregularities of gait -which may render a horse \inservice- 

 able, that it has been thought appuopriate to conclude this book with 

 a brief chapter on the principles involved in shoeing healthy hoofs. 



In unfolding this subject in the limited space at my disposal, I can 

 only hope to give the intelligent horse owner a sufficient number of 

 facts, based on experience and upon the anatomy and ph3^siology of 

 the foot and leg, to enable him to avoid the more serious conse- 

 quences of improper shoeing. 



Let us first examine this vital mechanism, the foot, and learn some- 

 thing of its structure and of the natural movements of its component 

 parts, that we may be prepared to recognize deviations from the nor- 

 mal and to apply the proper corrective. 



GROSS ANATOMY OF THE FOOT. 



The hones of the foot are four in number, three of which — the long 

 pastern, short pastern, and coffin bone, placed end to end — form a 

 continuous straight column passing downward and forward from the 

 fetlock joint to the ground. A small accessory bone, the navicular, or 

 " shuttle," bone, lies crosswise in the foot between the wings of the 

 coffin bone and forms a part of the joint surface of the latter. The 

 short pastern projects about 1^ inches above the hoof and extends 

 about an equal distance to it. (See also page 3(»0.) 



The pasterns and the coffin bone are held together by strong fibrous 

 cords passing lietween each two bones and i)laced at the sides so as not 

 to interfere with the forward and backward movement of the bones. 

 The joints are therefore hinr/e joints, though imperfect, because, wliile 

 the chief movements are those of extension and llexion in a single 

 plane, some slight rotation and lateral movements are possible. 



The bones are still further bound together and supported by three 

 long fibrous cords, or tendons. One, the extensor tendon of the toe, 

 passes down the fiont of the i)asterns and attaches to the coffin bone 

 just below the edge of the hair: when pulltnl ujwn by its nniscle this 

 tend(m draws the toe forward and enables the horse to place the hoof 

 Hat upon the ground. The other two tendons are placed behind the 



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