C.2t? On the Use of the Sutures 



they are all mutually joined by the sutures. Of 

 this process' I had a very striking illustration 

 some years ago. In a young subject, from 

 what cause 1 know not, the deposition of 

 osseous matter had been suddenly increased a 

 short time before death. It was in different 

 stages of progress, but had taken place in all 

 the bones of the body which I preserved ; in 

 some partially, in others generally. In all, the 

 new osseous matter was elevated above the 

 level of the bone, upon which it was placed. 

 In some parts of the parietal bones it was only 

 in its commencement, and put on the ap- 

 pearance ot a net-work, similar to that which 

 may beobserved in the same bones at an early 

 period of their formation. In other parts the 

 meshes of the net-work were more or less 

 filled up ; in others again completely, so as to 

 put on the uniform appearance of solid bone. 

 The same reticulated appearance was evident 

 on the edges of all the bones of the skull, 

 where they form the sutures, and at the ex- 

 tremities of the cylindrical bones, between the 

 body and epiphysis. The same appearance of 

 increased deposition was seen on the surface of 

 the cylindrical bones, with this difference, that 

 the meshes were not circular, but oblong 

 squares ; so as to put on more of the striated 

 appearance. In some parts, the newly secreted 



