444 E. C. MacDowell. 
independent head. Its tendon is divided all the way to the wrist. 
The irregular insertion of the tendon to the middle finger in the 
right hand has been previously described. 
Fie. 2. Dissection of left forearm of the baboon, to show the arrangement of the 
flexor digitorum profundus. The tendon of the Palmaris longus has been cut, 
and the flexor digitorum sublimis has been pushed over to the right. A, Tendon of 
Abductor pollicis longus; B, Biceps; C, Flexor carpi radialis; L, Palmaris longus; 
M, Pronator quadratus; P, Flexor digitorum profundus; S, Flexor digitorum sub- 
limis; U, Flexor carpi ulnaris; X, Internal condyle of humerus. 
