{ ^32- ) 
onable piece is thus taken into the Mouth, the lower 
Jaw is varioufly mov'd by its proper Mufcles, and Mu- * 
(lication is begun and carryed on by the Affiftance of the 
Tongue, Cheeks, and Lips; the two firft ftill applying 
the left divided parrj of the Aliment, to the Dentes 
Molares^ till there's an equal Comminution of all its 
Parts nor is the A(9:ion of Maftication meerly per- 
form'd for dividing the grofler parts of the Aliment; 
but divers of the Mufcles employed in the Motion of 
the lower Jaw, are at the fame time alfo ferviceablc in 
haftening the Saliva or Spittle, feparated from the Blood 
by the Parotid Glands thofe of the lower Jaw, and 
tinder the Tongue into the Mouth ; the Salival Glands 
of the Cheeks and Lips alfo contributing their Juices, 
do altogether joyn with the Mafticated Aliment, before 
or at the fame time it's made fit to be fwallowed; which 
Aftion is called Deglutition. 
Deglutition is thus performed ; the Aliment as well 
what's fluid as that Mafticated being lodged on the 
Tongue, which does fomewhat hollow it felf, by means 
of its own proper Mufcular Fibres, for the more com* 
modious entertaining the larger quantity, its tip aod 
fides are applied to the infides of all the Teeth of the 
upper Jaw, ( and Gingivs or Gums of thofe who want 
- Teeth) the Tongue is fuddenly drawn up by the Muf 
culi Stylogloft and Mylogloffus^ together with thofe Muf- 
cles which pull the Os HyoiJes upwards ; at the fame 
time the Fauces are alfo drawn up, and their Cavity 
enlarged by the Mufculi StyUpharyn get ; and about two 
thirds of the Tongues fuperiour Surface is adequately 
applyed to the Roof of the Mouth; the Epiglottis horn 
its pofition being confequently deprefs'd, does thereby 
cover the Glottis or JUmula of the Larynx, and prevents 
any part of the Aliment from defcending into the Wind 
pipe : In this part of the Adion of Deglutition the Gland 
mis 
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