the opposite side ; it is inserted, muscular, into the anterior su- 

 perior part of the humerus. The pectoralis minor arises frotn the 

 lower part of the crista and the interior part of the body of the 

 steriium, and from the inferior part of the Jurculum and coracoid 

 bone ; its tendon passes over the union of the three bones of the 

 shoulder-joint, moving freely over them, and is inserted, tendinous, 

 into the scabrous surface on the posterior part of the external side 

 of the humerus, just beIow its head. The coraco-brachialis arises 

 from the lateral angle of the sternum and base of the coracoid bone, 

 and is inserted immediately posterior and a little superior to the 

 pectoralis minor. The subclavius occupies the usual place, but is 

 small. A musele arises from the outer and upper fourth of the mem- 

 brane betvveen i\ve Jurculum and os coracoides ; it passes upvvards, 

 but internal to the capsular ligament of the jointj and is inserted, 

 tendinous, immediately above the insertion of the pectoralis minor. 

 Another musele arises from the external inferior third of the os CO' 

 racoides, from the angle and costal part of the sternum, and from 

 the Jascia of the pectoralis major t'or about the length of an inch j 

 passing upwards it forms a round tendon about 4 of an inch from 

 the shoulder, which passes over the joint and under the supra-spi- 

 natus, and is inserted into the external edge of the Jbramen at the 

 head of the humerus. The supr a -špinatus is small, and arises fleshy 

 from the superior edge of the scapula, near the glenoid cavity ; it 

 passes round and constricts the ligament of the joint, and is in- 

 serted, tendinous, into the humerus, immediately anterior to the 

 musele last named. 



" I will here notice, before proceeding to the remaining museles, 

 a loop through which several of ihe museles pass. It arises flat from 

 the infero-anterior edge of the scapula, just below the glenoid ca- 

 vity, and passing upwards and outvvards for about an inch, is then 

 doubled upon itself, and attached to the šame part from whence it 

 arose : there is no admixture of its fibres. 



" A musele arises from tbe^ascm which covers the last rib and the 

 outer edge of the external oblique, passes upwards and through the 

 loop, and is inserted into the lower part of the external edge of the 

 Jbravien situated at the posterior part of the head of the humerus. 

 The latissimus dorsi arises from the last cervical and first five dorsal 

 vertebrce, and forms a tendon, which passes through the loop and is 

 inserted immediately belovv the preceding musele. The iųfra-spi- 

 natus arises fleshy from the whole external surface of the scapula 

 beiovv the upper third, and is inserted into the large tubercle ot the 

 humerus. A musele arises from that part of the inner edge of the 

 os coracoides which is produced ; it passes obliquely upvvards and 

 outwards behind the os coracoides, to which it is attached ; and is in- 

 serted tendinous into the anterior tubercle of the humerus. The 

 deUoides arises from the posterior part of the projecting edge of the 

 scapula, and from the scapular process of the clavicle ; passing over 

 the shoulder-joint, it is inserted into the anterior part of the middle 



