284 Diseases of Bone. 



vascular) bone, higher up vascular granulations are seen, and 

 still higher caseous material lines these granulations. The 

 disease had spread high up in the tibia near to the upper 

 thread, i.e. in the second section of tibia which is attached to 

 the chief specimen. G. C. 2834. 



Presented by P. H. Maclaren, F.R.C.S.E. 



6. 213. Tubercular Abscess and Enlargement of the Lower 



End of the Tibia. — Lower end of fibula and section of tibia 

 from the previous case — macerated, to illustrate the above. 



The cavity in the tibia is lined by rarefied bone. On the 

 outside there is much new bone formation. The fibula also 

 shows new periosteal bone on the surface, but the cancellated 

 tissue exposed below is not the result of disease, but from an 

 accident during maceration. G. C. 2835. 



6. 214. Tubercular Enlargement of Shaft of the Femur. 



— Section of a right knee-joint and adjacent bones — injected 

 and in spirit, illustrating the above. 



The patient was an elderly man. His leg was amputated for chronic 

 ostitis. 



The femur has been condensed, and the surrounding tissues 

 thickened. The two cavities in the femur were occupied in 

 the recent condition by a semi-transparent gelatinous material, 

 which has been shrivelled and rendered opaque by the spirit. 

 The structure of the tibia is practically normal, and may be 

 compared with that of the femur. A caseous gland is seen 

 in the popliteal space. G. C. 3215. 



Presented by A. G. Miller, F.R.C.S.E. 



6. 215. Tubercular Enlargement of the Shaft of the 



Femur. — The other half of the bones from the previous 

 preparation — macerated. 



