272 Diseases of Bone. 



The small necrosed piece is in process of separation as in 

 the previous case. Beyond the area of rarefaction there is a 

 slight crust of new periosteal bone. F. P. C. 219. 



Presented hy Professor John Thomson. 



6. 176. Septic Osteo-myelitis following" Gunshot (Com- 

 pound) Fracture. — Portion of the upper part of a right 

 femur, illustrating the above. 



The wound was received at the battle of Waterloo. 

 This specimen shows essentially the same features as the 

 last, but with more new periosteal bone above the line of 

 demarcation. F. P. C. 220. 



Presented by Professor John Thomson. 



6. 177. Septic Osteo-myelitis and Necrosis following* Com- 

 pound Fracture. — Sections of part of a femur — macerated, 

 illustrating the above. 



The smooth dead bone at the seat of fracture has been in 

 process of separation. The rarefaction involved thereby has 

 occurred mostly on the outer surface, but it is visible also on 

 the medullary aspect. G. C. 1159. 



Presented by Professor James Russell. 



6. 178. Septic Osteo-myelitis and Necrosis following" 



Amputation. — Portion of the shaft of a femur after amputa- 

 tion — macerated, illustrating the above. 



The sawn end has necrosed, and has been in process of 

 separation. Immediately above the necrosed piece an imper- 

 fect collar of new periosteal bone has been formed, and the 

 surface of the rest of the shaft shows the effects of rarefactive 

 ostitis, combined with a limited amount of new periosteal bone 

 growth. G. C. 1158. a. 



Presented by Professor James Russell. 



