MILLER — CONTRIBUTIONS FROM ANATOMICAL LABORATORY. 215 



ens. The main portion of the thyroid axis, Tb., fig. 2, PL 10, 

 runs across the head of the humerus into the procoro humeralis 

 giving off several branches which supply this muscle, the cucul- 

 laris and the antibrachialis inferior. The latissimus dorsi may 

 receive its blood supply from this artery or from T. a. a. 



The Cutaneous Artery, Cu., PI. 9, and fig. 2, PI. 10, arises 

 from the axillary and runs across the ventral surface of the 

 coracoid ; a little posterior to the glenoid fossa it gives off two 

 branches, one, Ca., fig. 2, PL 10, accompanies the brachialis 

 around the upper part of the shaft of the humerus and continues 

 between the coraco branchialis longus and the humero anti- 

 brachialis inferior. Sometimes this branch arises directly from 

 the axillary artery. The other branch, Cu. a., fig. 2, PL 10, of 

 the cutaneous goes to the pectoral muscles, while the cutaneous 

 itself, Cu., PL 9, passing candad, pierces the body wall and runs 

 along its inner surface external to the linea alba anastomosing 

 with the intercostals and the epigastric. 



The continuation of the axillary, the Brachial Aeteey, Br., 

 fig. 2, PL 10, passes around the upper part of the shaft of the 

 humerus to its anterior side, running between the extensor carpi 

 radialis and ulnaris muscles ; passing between the radius and 

 ulna it crosses to the outside of the forearm ventral to the ex- 

 tensor digitorum communis. Just proximal to the carpus the 

 brachial gives off four branches; one, Br. a., fig. 2, PL 10, to the 

 flexor carpi radialis, which is continued to the outside of the 

 first digit ; one, Br. b., fig. 2, PL 10, to the flexor carpi ulnaris, 

 which continues to the fourth digit ; one to the flexor digitorum 

 communis and one to the extensor carpi ulnaris. The brachial 

 is continued as the Cubital Aetery, w T hich runs between the 

 cartilages of the carpus to the dorsal side of the hand, where it 

 breaks up into three branches. The first of these goes to the ad- 

 jacent sides of the first and second digits, the second goes to the 

 adjacent sides of the second and third digits, the third goes to 

 the adjacent sides of the third and fourth digits. 



The next large artery arising from the dorsal aorta is the 

 Gastric, G., PL 9. It runs candad to the stomach on which, 

 a little anterior to the center, it divides into two branches, one 



