HI 



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

 perior part of the humerus. The pedoralis minor arises from the 

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

 sternum, 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 freel)' over them, and is inserted, tendinous, 

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

 of the humerus , just below 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 siibclnvius occupies the usual place, but is 

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

 brane between the /t<r«; /am And OS coracoides ; it passes upwards, 

 but internal to the capsular ligament of the joint; and is inserted, 

 tendinous, immediately above the insertion of the pectoralis miliar. 

 Another muscle 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 for 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 supra-spinatus 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 

 muscle last named. 



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

 a loop through which several of the muscles pass. It arises flat from 

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

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

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

 arose: there is no admixture of its fibres. 



" A muscle arises from thejascia 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 

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

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

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

 inserted immediately below the preceding muscle. The infraspi- 

 natus arises fleshy from the whole external surface of the scapula 

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

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

 OS coracoides which is produced ; it passes obliquely upwards and 

 outwards behind the 05 coracoides, to which it is attached ; and is in- 

 serted tendinous into the anterior tubercle of the humerus. The 

 deltoides 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 



