(ifo) 
T\xtVnder-Javo\\ confiftedof Two ftrong Bones.jom-l 
ed together only at the Mentum; each meafured Four 
Inches in Length. The Head of this Bone (which was 
Half an Inch broad) was received into a £inm of the Os 
Temporum^ and very firmly articulated there. It had 
Two ProceJJus : the Anterior f or Superior is large and f 
thin, into which is inftrted the Temporal Mufcle. The 
Inferior ^ Procefs is fmaller, and runs to a ftiarp Point 
Here at this Procefs^ the Edge of the Mandible is fo di- 
lated, that it meafured above Half an Inch. On the in- 
fide of the Jaw here, 'is a large Sinus ^ which leads to a 
Foramen that goes into the Body of the Jaw- Bone ^ and 
affords a Paflage for the Veflels thither. 
The Ufe of thefe Bones is for Maftication ; which leads 
me to confider the Teeth. *And here we find all the 
Three Sorts of them ; for in the Z/pper-Jawbdorc, were 
Eight fmall Dentes Inciforesy Four ot each Side ; then a 
void Space, almoft a Quarter of an Inch ; then Two 
large Prominent Dentes Canini, one of each Side ; which 
jutted 0|Ut of t\\Q Jaw about Half an Inch : theft were 
fucceeded of each Side, with Three Dentes Incifores ; 
but thefe were much ftronger and larger than the Fore- 
Teeth ; and thefe imitated the Dentes Molares^ in that 
they were inferted into the Jaw-Bone with Two Phangs : 
But the Heads of thefe Incifores were acuminated ; where- 
as the Heads of the Molares were flat, and almoft of a 
Triangular Figure. There w^ere Four Denies Molares of 
each Side : in all, Four and Twenty Teeth in the Zipper- 
Jaw. But the double Phangs of the MolareSy and the 
Incifores Majores were fuch, as at firft fight, one would 
think them Two diftinft Te^th; each Phang being in- 
fcrt^d into a diftinft Alveolus j or Socket in the Jaw, and 
remaining feparated fome way above the Jaw Bone^ and 
only joined at the Head.^ 
in 
