ir,r, 



SCIEXTIFIC HUKSESHOEING. 



avoided or overcome bj proper care of the feet and rii,'-ht metli- 

 ods of shoeing. The main feature is to keep the feet as near as 

 possible to their natural shaitc, and tliis can only be done by 

 leveling and balancing them as directed in Chaj*. IV. 



The com Jill ca- 

 tions brouo^ht about 

 by i'ontraction in- 

 clude not only the 

 effects visible on the 

 external parts of the 

 lioof, as shown in 

 the preceding Figs. 

 52 and ')3, but its 

 tendency is to work 

 many destructive 

 changes in the ap- 

 paratuses of the in- 

 ternal foot, as is 

 here partially indi- 

 cated by Fig. 54, 

 which represents 

 the displacement of 

 the bony structures 

 from such cause. 



Fig. 54. median section of foot, .showing dis- 

 placement CAUSED HV CONTKACTIOX. 



A, Coffin-bone. B, Navicular. C, Lower pastern. 

 D, Upper pastern. E, Lower end of cannon. F, Sec- 

 tion of velvety tissue. G, Section of wall. H,Sec- ^yj^gj^^y^g^^^f^^j^. 

 tion of horny sole. I, Section of horny frog. 



K, Fragment of pl:intar cushion. L, Horny lamincc. tracts and wires 

 M, Sensitive laminit». N, N, Extensor tendon. |2nder around the 

 O, O, Flexor perforatus. P, P, Flexor perforans. 



R, Sesamoid ligament. S, Sesamoid bone (dotted base, the SOle and 

 line). T, T, Branching of flexor perforatus. 1, Pyr- froff are forced U1)- 

 amid of coffin-bone displaced. 2, Its normal posi- 

 tion. 3, Normal position of coffin-joint. ward, together With 



the bones and other 

 organs of the foot, until they are all tightly cramped by the 

 closing in of the horny box. The unnatural pressure around 

 the sole inflames the various tissues, causing a disease of the 



