!14 Diseases of Bone. 



The face has been destroyed, and the orbits, mouth, and 

 nose are thrown into one common gap. 



From the appearance of the face and the indefiniteness of 

 former nomenclature, it seems right to classify this as syphilis. 



B. C. I. 6. M. 39. 



B. The Skeleton. 



f. Where the chief changes are in the form of enlargement. 



6. 282. Syphilitic Disease of Skeleton.— Male skeleton, want- 

 ing the skull, illustrating the above. 



The vertebrge show an increased vascularity on the bodies 

 and lamiucB. The ribs are not appreciably altered. 



The clavicles show enlarged pores for blood-vessels, but 

 nothing that is characteristic. On the scapulae the posterior 

 part of the spines, especially the left, is somewhat thick and 

 irregular, but otherwise there is no appreciable change. The 

 right humerus is considerably thickened at its lower end by 

 periosteal new bone formation, most marked in front. There 

 the surface, besides being irregular, is in places eroded as if the 

 new material were being absorbed again. The periosteal crust 

 diminishes from below upwards, and does not quite reach the 

 deltoid attachment on the outer side, although it can be traced 

 further up on the back. The rest of the bone shows only an 

 enlargement of vascular pores. The left humerus has only a 

 very slight periosteal crust, about the middle of the posterior 

 surface. Elsewhere the surface of the bone is rough from 

 enlargement of the vascular pores. The right ulna shows only 

 some periosteal crusts on the outer side of the upper end, and 

 enlargement of vascular pores at other places, but the left ulna 

 shows a very distinct thickening all round the shaft, about the 

 middle. The changes at the upper end correspond to those on 

 the right side. The radii show an increased size of vascular 

 apertures and some periosteal new bone formation on the upper 

 part of the outer surface. On the right side, in addition, there 



