so TheAnafomy of aVLOKSV., Chap. VI. 



might not run through the whole Skull, but be llop'd at the 

 end of the fradured Bone ; whereas if it was not for thefe 

 Seams, it might with one Blow be fhivered all in Pieces 

 like an earthen Pot. But I (hall now return to the Bones. 

 The Frontal or Forehead Bone, which I 

 ^e Frontal j^^yg already taken Notice of as the firft pro- 



Caa;:i:,s, &c. ^^^^^ ^^ fore-part of the Skull. It is bound- 

 ed on its fore-part by the Coronal and firfl common Suture, 

 on the Sides by the Temporal Bones, and on its infide by 

 the OJ/a Spongiofa^ or fpongy Bones. Between its Lamina 

 or Plates, there is a double Cavity, from whence there is 

 alfo a double PaiTage into the Noilrils, diftinguiftied by 

 many bony Fibres, and fmall Scales, which are encompaiTed 

 ■with a green Membrane, and contain a foft, medullar, or 

 rather oily S ubftancc. Thefe are proportionably larger in 

 a tibrfe than in a Man, and have various Ufcs afcribed to 

 ihem, being thought by fome to afTift in the Office of 

 Smelling, by intangling the odoriferous Air ; by fome, to 

 promote the Shrilnefs of the Voice ; and by others, to be 

 a Receptacle for fome Portion of the excrementitious 

 Matter, which is feparated from thofe Parts. 



Belides thefe Cavities, there is a Sinus or Den on eacl> 

 Side, called the Frontal Sinus's, composed of a double Scale ; 

 one making the upper Part of the Orbit of the Eye, and 

 the other forming the Cavity above the Eyes, on either 

 Side, which is not very plain, having only Infcriptions an- 

 fwerable to the winding Convolutions of the Brain. This 

 Bone has alfo two Holes, which go to the Orbit of the 

 Eye, whereby the firft Branch of the Nerve of the fifth 

 Conjugation goeth to the Mufcles of the Forehead. It has 

 like wife four Proceiles, two of which are feated at the 

 greater Corner of the Eye, and the other two at its lefl'er 

 Corner, helping to form the upper Part of the Orbit. 

 The Sinciput '^^^ Bones of the Sinciput are next to the 



* Frontal, being joined to it by the Coronal 

 Suture, and behind to the Occipital Eont by tht Lambdci- 

 cat Suture, on eai:h Side, to the Temple-Bones, by the^ii- 

 tura Squammof<£, or fcaly Sutures^ and by one of theconv 

 mon Sutures to the Wedge-like Bone. They are alfo join- 

 ed one to the other, by the Sagittal, or Arrow-hke Suture. 



Their Figure is fomewhat fquare, and though their Sub- 

 ftance is thinner than that of the other Bones of the Skull, 

 yet they are aiib mads up of two Lamincs^ excepting where 



they 



