Syphilitic ' Caries: 297 



6, 247. Syphilitic Disease of the Skull.— Skull-cap, with 



ununited frontal suture — macerated, illustrating the above. 



Between the temporal ridges the parietal bones have been 

 roughened on the surface, partly by vascular pores, and partly 

 by irregular excavations, which, as in the previous specimen, 

 have been smoothed over. The interior of the bone shows an 

 increased number of channels for the branches of the middle 

 meningeal artery. The sutures are unusually distinct. 



B. C. I. 7. M. 6. 



6, 248, Syphilitic Disease of the Skull.— Bkull— macerated, 



illustrating the above. 



There are marks of previous disease on the frontal, malar, 

 superior maxillary, and sphenoid bones. The frontal bone 

 shows irregular rounded depressions and marks of increased 

 vascularity on its anterior and lateral parts. Both malar bones, 

 but especially the right, are roughened by enlargement of the 

 pores for blood-vessels. A similar condition is seen below the 

 nasal aperture and on the roof of the hard palate. The under 

 surface of the body of the sphenoid behind the nasal septum 

 is absorbed, and ^has an aperture into the sphenoidal sinuses. 

 The interior of the skull shows numerous markings due to 

 increased vascularity, not only on the frontal but also on the 

 parietal bone, on which there are very few marks on the 

 outside. B. C. I. 7. M. 20. 



6. 249. Syphilitic Disease of the Skull.— Skull-cap of an 



elderly person — macerated, illustrating the above. 



There are marks of former disease on the frontal and left 

 parietal bones. Several irregular excavations are seen near the 

 frontal eminences, especially on the left side, and there is another 

 above the left parietal eminence. The margins of these are 

 smoothed over as if the disease had subsided. The interior of 



