186 



THE FOOT IX ITS RELATION TO THE EXTIIIE LIMB. 



(compare figs. 158 and 159). In consequence, it describes a 

 somewhat larger curve, as is seen on examining the bearing 

 and coronary borders. The height of the heel, in comparison 

 with that of the quarter and toe, is approximately as 1:2:3^ 

 or as 1 1- : 2 : o. The toe forms an angle of about 45° to 50° 

 with the earth (compare with fig. 166), and when viewed 

 from the side its direction corresponds with that of the 

 suffraginis. 



When the limbs are straddled (as in tig. 144), the hoof (tig. 

 177) is always more oblique, because the outer part of the wall 

 is naturally somewhat longer and stands more obliquely in 



relation to the ground than 

 the inner (compare fi<'S. 

 160 and 161). The outer 

 bearing margin of the hoof 

 describes a wide curve, 

 the greatest prominence 

 of which is at the point 

 where the quarter joins 

 the heel ; the inner, on the 

 other hand, is straighter, 

 consequently the outer 

 division of the hoof is 

 broader than the inner. 

 So long as the hoof is 



Fig. 176.— Xormal rislit fore-foot/ 



healthy, the limbs of the 

 frog are equally devel- 

 oped. The obliquity of 

 the hoof results from the form of the leg, and must be dis- 

 tinguished from obliquity produced by disease. 



When the toes alone are turned out (as shown in fig. 145), 

 the hoof (fig. 178) differs from the foregoing in that the circum- 

 ference of the bearing margin is less curved at the outer border 

 of the toe and the inner heel than at the inner portion of the 

 toe and the outer heel. In consequence, two deep and two 

 shallow curves lie opposite one another. The toe of the hoof 



* The artist has slightly exaggerated the thickness of the wall at the heel. 

 It must not be forgotten, however, that owing to the reflection of the bars, the 

 wall at this point is apparently reinforced, and that, as the wall is worn away 

 obliquely, it hoks thicker than it in reality is. 



