100 



HORSESHOEING. 



Fig. 97. 



The buttress (angle formed by the union of wall and bar) 

 requires special attention. In healthy unshod hoofs the bars 

 run backward and outward in a straight line from the anterior 

 third of the frog. In shod hoofs, however, it happens that the 

 buttresses gradually lengthen, curl inward, and f)ress upon 

 the branches of the frog, causing the latter to shrink. In such 

 cases the indication is to remove these prolongations of horn 

 from the buttresses so as to restore to the bars their normal 

 direction. 



The sharp edge of the plantar border of the wall should be 

 broken away with a rasp until the relative thickness of the 

 wall equals its absolute thickness. (Fig. 97). However, in 

 healthy hoofs, that is, in those whose 

 ivalls are straiglit from the coronet to 

 the ground, the outer surface of the 

 wall should never he rasped. The 

 only exceptions to this rule are those 

 cases in which there is an outward 

 bending of the lower edge of the wall, 

 most frequent on the inner side wall 

 and quarter. 



With respect to the inclination 



Longitudinal (vertical) section of of the gTOUud-SUrf acC of the hoof tO 

 the wall at the toe: o c is the abso- , ,. . (• ,i /» j_ 



lute, and o 6 the relative thickness the dirCCtlOU 01 thC lOOt aXlS, aS 

 of the wall. With a as the centre, 

 and the line a c as a radius, a circle 



is drawn; the corner of horn in f^^^^g ^^^ established: 

 front of this circle and indicated 

 by dotted lines is to be removed 

 with the rasp. 



viewed from in front, the following 



In the regular standing position of 

 the limbs (seen from in front) the 

 plantar surface of a hoof is at right angles to the foot axis, and 

 the outer and inner walls are of equal heights. 



In the hose-wide position of the limbs the plantar hoof- 

 isurface is more or less inclined to the foot axis, usually to a 

 very small degree, and the outer wall is somewhat higher 

 (longer) and more slanting than the inner. 



In tlie hase-narrow position of the limbs the plantar hoof- 



