Nature therefore having appointed the _Saliva_ for the digestion of the Food, has taken care that it shall be thrown in upon the Aliment on every side. Thus the _Glandulæ Nuckianæ_, and the _Parotides_, supply their Juices to that part of the Food, which lies on the outside of the Gums, between the Cheeks and the Teeth, and the _Glandulæ Maxillares internæ_, and _Sublinguales_, do bestow their Liquor upon the Meat, which is within the Teeth and Gums. Neither has she had a Regard only to that Supply, which is due to all the parts of our Food, but likewise to the mixture of the two different Juices of the _Saliva_, which is necessary to its Fermentation. And therefore, as I have already observ'd, the Orifices of the Ducts, which belong to one sort of Glands, are placed near the Aperture of a Duct, which conveys a Juice from one of the other Glands. So the Ducts of the _Glandulæ Nuckianæ_, and the _Ductus Stenoniani_, do on each side open into the Mouth, near one another; and the salivatory Ducts of the _Glandulæ Sublinguales_, and the _Maxillares internæ_, though they have distinct Orifices, empty themselves under the same _Papillæ_, and the Juices, which are supply'd by them, meet there, and flow into the Mouth together. The several Parts of the _Saliva_ being discharg'd into the Mouth in such a manner as to meet and begin a Fermentation, the _Saliva_ does, partly as it is agitated, with the Food by the Teeth, and some other parts of the Mouth; partly by its own Fluidity, insinuate it self into, and mixes with the Food, and not only moistens and softens it, but excites the Fermentation, which is to dissolve it. And when the Aliment is thus mix'd with the _Saliva_, which serves to ferment the whole Mass, it is then to be convey'd into the Stomach, that great digestive Vessel of the Body, where the Fermentation is not only continued, but improved.