A CLINICAL STUDY OF THE SKULL. 59 



growth. That the bregmal and post-obelial portions of the sagittal 

 suture are distinct from the remaining portion is probable when it 

 is recalled that both portions are completed after birth in the 

 process of obliteration of the fontanels. That the post-bregmal 

 portion may be a good subdivision is also probable, since it answers 

 pretty nearly to the position of the Pacchionian bodies and from 

 the fact that in the parietal bone of the young subject this portion 

 is seen to be pectinated, while the intertuberal is nearly smooth. 

 The intertuberal portion represents the shortest distance from the 

 tuber to the suture. The obelial portion has an admirable raison 

 d'etre in being the region of the parietal foramina. 



The following notes in illustration of the manner in which the 

 foregoing statements may be employed in description of crania may 

 be found useful : The specimens are all in the College of Phy- 

 Bicians. 



No. 114, native of Elba : 



Sutures open. 



Bregmal, 1" 5"""; post-bregmal, 1° 5™"; intertuberal, 4" 5™'" ; obe- 

 lial, 2" ; post-obelial, 1'. 



No. 30 : 

 Acrocephalic, synostotic. 

 Bregmal and post-bregmal, 4*. 



Entire region elevated ; not carinate ; intertuberal, 4°, slightly 

 carinate; obelial, 2° 5™"", flat; post-obelial, 2", carinate. 



No. 92, Uskoke : 

 Left coronal suture closed ; obelial portion lobate ; post-bregmal 

 with markedly oblique axes to the serrations, in contrast to the 

 transversely disposed serrations of the intertuberal portions. 



No. 38, Kabardine : 

 Both coronals obliterated ; no wisdom teeth, yet the basi-cranial 

 suture is closed; bregmal, 1° 2""™; post-bregmal, 1° 2°""; intertu- 



