220 MANUAL OF MODERN FARRIERV 



c. The upper or larger pastern bone. 



d. The shank bone. 



e. The sesamoid bone. 



f. The suspensory ligament. See rupture of this described, 



page 100. 

 g. The tendon of the perforating flexor, inserted into the 



coffin bone after having passed over the navicular bone. 

 //. A long ligament, reaching from the pastern bone to the 



knee. 



u The small inelastic ligament, which fastens down the sesa- 

 moid bone to the larger pastern. 



/. The extensor tendon, inserted into both the pasterns and 

 the coffin bone. 



k. A continuation of the suspensory ligament, inserted into 

 the smaller pastern bone. 



/. The navicular, or shuttle bone. One of the chief uses of 

 this bone is to take off a portion of the weight from the 

 coffin bone ; and from the navicular bone it is thrown on 

 the tendon, which rests on the elastic frog beneath. See 

 diseases of this bone, page 139. 



7?i. The inner, or sensitive frog. This is a wedge-shaped body 

 projecting from the bottom of the foot, together with 

 the substance continued from it, and occupying the in- 

 terval between the cartilages. 



;/. A ligament which unites the navicular bone to the smaller 

 pastern. 



0. A ligament uniting the navicular bone to the coffin bone. 



/. This is the seat of lameness of the navicular joint. 



g. The sensitive sole between the coffin bone and horny sole. 



It is placed between the coffin bone and the sole ; and, 

 from its yielding nature, assists in preventing concussion, 

 and also forms a supply for the horn of the sole. It is 

 furnished with nervous fibres, and is highly sensitive. The 

 lameness which is caused by the pressure of a stone or of 

 the shoe on the sole is occasioned by inflammation of the 

 sensitive sole. From the same cause, corns between the 

 crust and the sole result. 



r. The coronary ring of the crust. 



s. The covering of the coronary ligament, from which the 

 crust is secreted. 



