24:8 Diseases of Bone. 



separation may be specially studied on the large fragment in 

 front. There the vascular granulations which have separated it 

 from the living stand out as a deep red line all round and 

 below it. A similar process may be observed, only less 

 distinctly, in connection with the other smaller fragments 

 marked by bristles. The periosteum has formed a crust of 

 new bone around the original shaft, except opposite the large 

 necrosed fragment, where it has probably been itself destroyed. 



W. C. G. 25. 



6. 106. Acute Suppurative Osteo-myelitis and Periostitis 



of the Tibia — Necrosis. — Section of the lower half of the 

 same tibia as the last — injected and mounted in spirit to illus- 

 trate the above. 



Some of the original cancellated tissue is seen in the interior. 

 Outside this, and marked by bristles, there are necrosed portions 

 of the original compact tissue, and beyond that again there is a 

 thick layer of newly formed periosteal bone. This is irregular 

 on the surface, and shows at one place a cloacal aperture for the 

 escape of pus from the neighbourhood of the dead bone. 



W. C. G. 24. 



6. 107. Acute Suppurative Osteo-myelitis and Periostitis 



of the Tibia — Necrosis. — Wax cast of a leg, illustrating the 

 above. 



This cast was figured in Russell on "^N'ecrosis," published in 

 1794, plate v, fig. 1. The wax was apparently not changed at 

 all as yet (1893). G. C. 1177. 



Presented by Professor James Russell. 



6. 108. Acute Suppurative Osteo-myelitis of the Tibia 



and Femur — Necrosis. — Plaster cast of the inside of the 

 thigh and leg of a young person, showing the above. 



