Eoss — On the Myology of the ClieetaJt. 27' 



and inner surface of the humerus. The tendon of insertion was broad, 

 and split into three parts. 



The major was inserted into the anterior surface of the ulna, im- 

 mediately underneath the origin of flexor profundus ; ithe middle, 

 small and round, into the anterior surface ; and the smallest, u.nited 

 with the biceps tendon. 



The triceps arose as usual by three heads, one scapular, and two hu- 

 meral ; between them the musculo-spiral nerve. Origin and insertion 

 normal, the relation of the three heads was : longus, 10"50 ; externus, 

 4-26 ; internus, '60. 



Anconeus internus, or epitrochleo-anconeus (Grruber) ('Oo), was very 

 distinct ; it arose from the inner condyle, crossed over the ulnar nerve, 

 and was inserted into the olecranon process. It was about an inch in 

 length. The externus was absent. 



The pronator radii teres ("So), normal. Prom the tendon of inser- 

 tion, which was prolonged to within two inches of the end of the radius, 

 a fine tendon was given off, which united with the palmar fascia. 



The flexor carpi radialis ('20), thin, fleshy belly; inserted into 

 second metacarpal, giving off slips to the styloid process of radius, and 

 the trapezium, as it passed through the groove. The membrane com- 

 pleting the groove was very tough and strong. 



The palmaris longus ('75), very large, took the ordinary course of 

 the flexor sublimis, which was quite rudimentary, weighing only (-01). 

 The latter arose from the front of the tendon of the flexor profundus, 

 dividing into three tendons, and alao giving off a slip to the flexor pro- 

 fundus. The three tendons went to the three middle digits of tlie 

 manus, each of the three middle digits having thus two tendons, one 

 from the palmaris longus, and one from the flexor sublimis. The fourth 

 had only one, viz., from the palmaris longus. Opposite the metacarpo- 

 phalangeal articulation the tendons united, sending off a process on 

 each side. Insertion as usual. 



Plexor carpi ulnaris ('70) arose by two heads, separated by the 

 ulnar nerve. 



Plexor digitorum profundus"(2"06) and flexor longus poUicis ("15), 

 which were intimately connected at their insertion, arose from radius, 

 ulna, and interosseous membrane. The five tendons were united at the 

 wrist, and passed to the five digits, being inserted into the last pha- 

 langes. The flexor sublimis arose from the front of the united tendons 

 before they passed under the annular ligament, which was very strong. 



The pronator quadratus ("IB) extended up as far as the oblique 

 ligament, which was placed lower than usual, about Ih inches below 

 the tubercle of the radius. 



The supinator radii longus and extensor carpi radialis brevier were 

 both absent. 



Extensor carpi radialis longior ("80), extensor carpi ulnaris ('28), 

 and extensor ossis metacarpi poUicis ('12) had all normal origins and 

 insertions. 



Supinator radii brcvis ('10), besides its usual radial insertion, had a 



