892 



5786. The upper moiety of a similarly bisected scapula of a Child. 



The coracoid element has not coalesced with the proper scapular one, and is wanting. 



Hunterian. 



5787. The upper moiety of a similarly bisected scapula of an Infant. 



The coracoid element remains attached by dried cartilage to the scapula proper. By 

 comparing the present with the two preceding specimens, it will be seen that the proportion 

 of the cancellous texture near the glenoid cavity does not increase in the same ratio as the 

 compact lamellar part of the bone, but forms a larger proportion of the scapula in the 

 Infant. 



Hunterian. 



5788. The posterior moiety of a longitudinally bisected humerus. 



It shows the accumulation of the minute cancellous structure at the extremities, and the 

 progressive thickening of the outer compact bone as it passes to the shaft, where it forms 

 exclusively the walls of the medullary cavity. At the proximal end may be discerned the 

 linear trace of the primary separation of the epiphysis formed by the great tuberosity ; that 

 of the epiphysis formed by the articular head is less conspicuous. At the distal end may 

 likewise be discerned the linear trace of the confluence of the epiphysis with that plate of 

 compact substance which separated the olecranal from the coronoid fossae. 



Hunterian. 



5789. A radius, longitudinally bisected. 



The compact wall is scarcely defined at the bicipital tuberosity. It is thickest at the con- 

 vex side of the middle of the bent shaft. 



Prepared in 1851. 



5790. An ulna, longitudinally bisected. 



The compact wall is thick where it forms the bottom of the great sigmoid cavity. 



Prepared m 1851. 



5791. The scapho'ides, longitudinally bisected. Prepared in 1851. 



5792. The os magnum, longitudinally bisected. Prepared in 1851. 



5793. A metacarpal bone, longitudinally bisected. 



The compact walls of the medullary cavity are proportionally very thick. The canal for 

 the medullary artery enters at the middle of the concave surface of the bone, and extends 

 obliquely proximad. 



Prepared in 1 8 5 1 . 



