Du£fc To order'd, that the Juice, which is (up* 

 ply'd by one Gland, is difcharg'd into the 

 Mouth, very near to the Orifice, by which 

 the Juice of a 'different 'Nature is tranfmitted 

 from another, fb that they muft rfeceffarily 

 meet and mix together. Thus the GUnduU 

 Nucfyanj, and Parotides, throw in two diffe- 

 rent Juices by Orifices, which open into the 

 Mouth very near to one another; and the 

 Glandula MaxilUres interna, and Sublinguales, 

 do below fupply the fame kind of Juices by 

 Orifices, that open fb near to one another as 

 to fecure the mixture of the two different 

 Juices. 



Thefe Glands, I fay, do between them af- 

 ford two divers forts of Liquors, of fuch a 

 Nature a> are apt to ferment upon their flrft 

 Mixture, but perhaps more considerably when 

 they come to be digefted by the Heat of the 

 Stomach. So that the Coliuftation, or Fer- 

 mentation, which attenuates and conco&s the 

 Food in the Stomach, does not ordinarily a- 

 rile between the Aliment and the Saliva, but 

 between the feveral Parts of the Saliva it felf. 

 And indeed, if the Saliva did not confift of 

 two Juices, whofe Nature is in fuch a manner 

 different, as to render them ape to ferment 

 upon their mixture, it would be very hard to 

 conceive how it mould fb readily and indiffe- 

 rently ferve for the Digeftion of all Eatables ; 

 how it mould ferment with , and diflblve fb 

 great a variety of Things, not only of a dif- 

 ferent, but of a contrary Nature ; how it fhould 

 ferment with Acids as well as Alkalies, digeft 

 things that are cold, as well as hot or tempe- 

 rate ^ fome things that are fait, others that 

 M 3 are 



