SPECIFIC AND REMEDIAL SHOEING. 



269 



A, CofTin bone. 



B, Navicular bone. 



C, Lower pastern bone. 



D, Upper pastern bone. 



E, Cannon bone. 



F, Velvety tissue, or sen- 

 sitive sole. 



G, Horny wall. 

 H, Horny sole. 

 I, Horny frog. 



K, Plantar cushion, or 

 sensitive sole. 



L, Horny laminae. 



M, Sensitive laminge. 



N, Front extensor tendon. 



O, Perforatus (superficial 

 flexor. 



P, Perforans (deep flexor 

 of the foot, inserted under 

 the coffin bone. 



R, Suspensory ligament of 

 the fetlock. 



S, Sesamoid bone (dotted 

 line). 



T, Branch of perforatus 

 tendon attached to lower 

 pastern bone. 



U, line of deflection from 

 V, caused by knuckling. 



Fig. 177. sectional vikw of foot. 



Knuckling Shoes. — Fig. 177 is a sectional view of foot, 

 lower and upper pastern bones, and end of cannon or shank 

 bone. The line from C to Y shows the natural direction of the 

 foot, when the coffin bone is in a healthy, normal condition; C 

 to IT shows the deflection from the natural course in a bad case 

 of knuckling. The difference may be readily seen by compar^ 

 ing Fig. 177 with Fig. 178, after the shoe (Fig. 179; and Fig. 

 180, showing section of ground tread) is nailed to the foot. 

 This shoe (Figs. 179 and 179a) is easily made by welding toe 

 <.-alk in front of shoe, as shown (Fig. 179a). The height of 

 the toe calk should vary according to the case in hand. The 

 heels of shoe should be beveled on the ground tread, as shown 

 at B, B, Fig. 179 ; and Fig. 179a shows a side view of the front 



