Development of the Bones of the Upper Limb. 27 



2. 48. Development of Upper Limb. — Skeleton of the arm of 

 a foetus between third and fourth month — in spirit. 



B. C. 1. N. 91. 



2. 49. Development of Upper Limb. — Skeleton of right upper 

 limb of an infant at birth — macerated — showing the relative 

 amount of each bone developed at this stage. Prepared by 

 Vasseur, Paris. G. C. 3545. 



Presented by Chaeles "W. Cathcart, F.R.C.S.E., 1893. 



2. 50. Development of Scapula. — Scapula of an infant — injected 



and in turpentine — showing the bony and cartilaginous portions. 



There is an epiphysis in the coracoid process, but no bone 



is as yet deposited in the cartilaginous epiphysis at the glenoid 



cavity, the acromion process, and the vertebral border. 



B. C. 1. K 55. 



2. 51. Development of Scapula. — Scapula of a young person, 

 said to have been 15 years of age — macerated and dried. 



The coracoid process has not yet united, and the cartilagin- 

 ous extremities of the acromion process, glenoid cavity, and 

 vertebral border have disappeared in the process of maceration. 



G. C. 354.3. 

 Presented by Chakles W. Cathcart, F.R.C.S.E., 1893. 



2. 52. Ossification of Humerus.— A section of the humerus in 

 early life— injected and in turpentine — to show the process of 

 ossification in it. 



The cartilage has shrivelled, but one small centre of 

 ossification is shown for the head and another for the greater 

 tuberosity. The lower end of the bone is as yet entirely 

 cartilaginous. B. C. 1. N. 19. 



