Fractures of the Femur. 129 



It may be observed in this, as in many of the previous speci- 

 mens, that no callous formation has at least been permanent, 

 except between the broken surfaces of the bone, where it is of 

 service in uniting them. G. C. 363. 



3. 235. United Fracture about the Middle of the Shaft. 



— Posterior section of lower end of a left femur — macerated, 

 showing the above. 



The upper fragment has lain in front of the lower, and 

 the broken ends have been drawn inwards. The union has 

 evidently been of long standing. B. C. i. 1. M. 33. f. 



3. 236. Badly united Fracture about the Middle of the 



Shaft. — Right femur — macerated, showing the above. 



The upper fragment is in front of the lower. They both 

 over-ride to a considerable extent, and at their junction form an 

 obtuse angle, pointing inwards. The lower fragment is rotated 

 outwards through an angle of about 45°. The medullary cavity 

 is closed in, and the ends are united by an irregular mass of bone. 



F. P. C. 123. 

 Presented hy Professor John Thomson. 



3. 237. Badly united Fracture about the Middle of the 



Shaft. — Fragment of the shaft of a femur — macerated, showing 

 the above. 



The specimen was found in the bush, among other bones, at Sangaga, 

 Vintang Creek, south bank of the Gambia, W. Africa, on 13th January 

 1891. 



There was evidence of a fight having occurred at the spot some time 

 before. 



The upper fragment is anterior and internal to the lower, 



and a firm mass of bone unites them. G. C. 3457. 



Presented hy J. Lester, M.B., CM. 

 I 



