r 26 ] 
The next we fhall take notice of, arc 
XLL 
The Mufcles of the Lips. 
S the Cheeks have no Motion of their own, be- 
ing only moved in common with fome one or 
more of the Mufcles of the Lips or Jaws, we fhall 
give our Defcription of the Buccinator a Place with 
the Mufcles of the Lips ; and as to the Formation 
of the Cheeks, they cannot be laid to be formed of 
the Buccinator or ffuadratus Genre alone, for all 
thofe that move the Lips contribute to it alfo; and 
whatever Motion the Buccinator may be faid to have, 
it is proper to the Lips and Mouth alone, and not 
to the Cheeks. Now the Mouth being the cen- 
tral Point, from which all the Mufcles that move 
the Lips, as it were, radiate, the firft that ought to 
be deferibed is the- Orbicularis , by fome called the 
Ofculatorius , and by others the Sphincter Labiorumv 
becaufe whatfoever Mufcle moves of thole round 
about it, the fpontancous Form of this is inevitably 
alter'd*. we fnall therefore firft deferibe 
Notwithftanding that the natural Pofition of the 
Lips makes not a circular Form, yet the Fibres of 
this Mufcle go round it 5 however, they cannot pro- 
perly be faid to be orbicular, or be likened to a 
XLII. 
The Orbicularis. 
Ring, 
