Enlargement frtwi Pus-forming Orgcmisms. 239 



6. 90. Thickening- of the Femur from Chronic Suppura- 

 tive Ostitis. — Right femur — macerated, showing the above. 



The bone is much curved forwards near its lower end, and 

 is correspondingly flattened from side to side. The posterior 

 aspect of the bone is very rough and irregular, but the surface 

 elsewhere is smooth, except where there are impressions left by 

 blood-vessels. This seems to have been a case where chronic 

 ostitis had led to softening and yielding of the bone, with sub- 

 sequent solidification. W. C. G. 34. 



6. 91. Great Thickening- and Irreg-ularity of the Surface 

 of the Femur, from Chronic Suppurative Osteo- 

 myelitis. — Right femur, in section, showing the above. 



There is great thickening of the bone and extraordinary 

 irregiilarity of its surface. Along the back, and on all aspects of 

 the upper third, the surface is thrown out into large irregular pro- 

 cesses and plates, a condition which is also seen, to a less extent, 

 along the front, The medullary cavity is completely filled up 

 by cancellated tissue, except for about an inch near the upper 

 end. At the junction of the upper and middle thirds the new 

 bone shows several irregular cavities communicating posterially 

 with the surface. These have probably been due to localised 

 suppuration or minute necroses. One or two similar cavities 

 are seen scattered throughout the bones. G. C. 1000. 



6. 92. Great Thickening- of the Femur from Chronic 



Suppurative Osteo-myelitis. — Right femur in section — 

 macerated, showing the above. 



There is very great enlargement of the shaft of the bone, 

 with some dilatation of the medullary cavitj^ near the lower 

 end. The surface of the bone along the back and at the 

 muscular attachments of the trochanters is irregular, and the 

 vascular channels are greatly enlarged all over. The wall of 

 the shaft is almost entirely composed of cancellated tissiie. 



B. C. I. 5. M. 26. 



