Syphilitic Enlargement. 321 



A large node extends along the inner surface in the form 

 of a diffused periosteal thickening, somewhat uneven on the 

 surface. The interior of the node is compact and continuous 

 with the shaft above, but elsewhere it is more or less cancellous 

 where it lies on the shaft. "W. C. G. 21. a. 



6. 302. Syphilitic Enlarg-ement of the Femur.— Posterior 



half of the lower end of a left femur — macerated, illustrating 

 the above. 



The surface is irregular, from a deposit of condensed bone 

 upon the compact shell, i^ear the lower end the process has 

 been recent, and a film of new periosteal bone on the surface 

 of the old thickening is clearly distinguishable at the inner 

 part of the section. W. C. G. 21. a. 



6. 303. Syphilitic Enlargfement of the Femur.— Posterior 



half of the middle three-fourths of a left femur — macerated,, 

 illustrating the above. 



A large node is seen in section on the inner surface. 

 It is condensed, except about the middle, where the tissue is 

 more porous. The line of the original compact shell can, 

 however, still be traced. W. C. G. 21. a. 



6. 304. Syphilitic Enlarg-ement of the Femur.— Sections of 



upper end of a right femur — macerated, illustrating the above. 



The surface is irregular from the formation of new densely 



compact bone, continuous with the original compact tissue, 



and indistinguishable from it. This condensation often goes 



by the name of sclerosis. The medullary cavity is somewhat 



contracted. P. P. C. 393 and 394. 



Presented by Professor John Thomson. 

 X 



