18 MANUAL FOR STABLE SERGEANTS. 



along the front of the cannon to become attached to the upper and 

 front part of the third phalanx. 



Action. — To extend the joints of the foot and knee. 



Fig. 3.— Superficial muscles of horse. The cutaneous muscle, except the cervical 

 part, has been removed, a, Trapezius cervicalis; a', trapezius thoracalis; c, c, 

 brachiocephalicus; d, sterno-cephalicus; e, deltoid; /,long head of triceps;/', lateral 

 head of triceps; g, anterior superficial pectoral; h, posterior deep pectoral; h' , an- 

 terior deep pectoral; i, serratus thoracis; i' , serratus cervicis; fc, latissimus dorsi; 

 Z.obliquus abdominis externus;?', aponeurosis of Z;m,serratus dorsalis;77j'^ lumbo- 

 dorsal fascia; o, tensor fasciae latae; o', fascia lata; o", gluteus superficialis; p', 

 gluteal fascia; q, q', q", biceps femoris; r, semitendinosus; s, sacro-coccygeus dor- 

 salis; t, sacro-coccygeus lateralis; u, coccvgeus; v, cervical cutaneous muscle; w, 

 splenius; x, rhomboideus; y, tendon of longissimus capitis et atlantis and brach- 

 iocephalicus; Zf supraspinatus; z' , external intercostal; X, "v^'ing of atlas; 2, spine 

 of scapula; 4', lateral epicondyle of humerus; 6, deltoid tuberosity; 8, olecranon; 

 16, tuber coxae; 20, patella; ^1', lateral condyle of tibia. (After EUenberger-Baum, 

 Anat, fiir Kiinstler.) (From Sisson's Anatomy of the Domestic Animals; Copy- 

 right, W. 13. Saunders Co.) 



(6) The superficial digital flexor (superficial flexor of the foot) 

 (fig. 6). This muscle originates from the lower and inner part of 

 the humerus. It passes down the back part of the leg, becoming 

 tendinous just above the knee; from the knee it passes downward to 

 the fetlock where it expands and forms a ring for the passage of the 



