2o6 MANUAL OF MODERN FARRIERY 



the lower bone of the shoulder, and is continued and 

 inserted into one of the bones on the inner side of the 

 knee. It is also seen at e, fig. 2. 



2. The external flexor of the leg, and which is situated on 



the outer side of the arm, towards the back. It has its 

 origin in the outer head of the lower bone of the 

 shoulder, stretching towards the knee. It is of a 

 tendinous character, and divides into two portions, one 

 of which is inserted into the same bone of the knee, and 

 the other into the outer small bone of the leg. 



3. And extending down to 7, 4, and 5, are the principal 



artery, nerve, and vein of the leg. 



7. This is the perforated flexor muscle. It arises from the 

 lower and back portion of the inner head of the lower 

 bone of the shoulder, and is intimately intermixed with 

 the perforating flexor muscle. As it descends along the 

 bone of the arm, it becomes tendinous, and extending 

 to the knee, it is bound down by ligamentary bands to 

 prevent it from starting in sudden or violent motion. 

 From the knee it widens and partly laps round the 

 tendon of the perforating muscle ; they then descend 

 together in contact, but are not adherent, sliding over 

 each other freely and safely by the aid of the lubricating 

 fluid. They are both encircled in a thick sheath of 

 cellular substance which is attached to them by 

 numerous small fibres. Reaching near to the fetlock, 

 the tendon expands still more, forming a complete ring 

 round the tendon of the perforating muscle. This is 

 shown at , Plate vi, fig. 7. The perforated tendon soon 

 divides, and is inserted into the larger and smaller 

 pastern-bones, its office being to bend them. 



8. The subcutaneous vein of the side of the chest. 



MUSCLES ON THE INSIDE OF THE SHOULDER. 

 PLATE VI, FIG. 2. 



a. The flexor of the arm, which is one of the most powerful 

 of the flexor muscles. It has its origin in the extremity 

 of the ridge of the shoulder-blade, in the form of a 

 large and round tendon, which extends between two 



