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and continu’d Elixaticn firsl rcnder’d raore Tender, and then Colliquatedand diflolv’d into minuter Particles, so as to mix more equally wich theFluid, and with that to make one Pulpament, or Chylous Mass. Othershave suppos’d ic to be pcrform'd by Attrition , as is the Stomach, by tholerepeated Marions which are the necessary Effects of Respiration, when ith distended by the Aliment did both rubor grind off some Minuter Parti-cles from the Großer parts, and by continually Agitating the Maß of Foodmake thole parts, which are not Contiguous to the Stomach , strikeone a-gainst another, and break one another in piceis, untill they are all Attenua-ced. Others think that the Bilious Juice, others that the Sprits, are chief-ly concern’d in this Ajfair. Others there are that will have the Food Dijsolv’dby a Menstruum, which is sopply’d from the Glands of the Stomach, or someother way :but these differ in their Notions of the Nature of the Menstruum jFor there are some that soppose it to be an Acid, which does Erode theGroßer parts of the Food, and Diflblves them in the fame manner as Vtnegar,Sput ot Vitriol, or any such like Acid, will diffolve even so solid a Body asIron. And it cannot be deny’d, but that Oyl of Vitriol will diflolve Flfefh-meat, and reduce it to a Pulp. But it is not to be suppos’d, that the Fi-bres of the Stomach can admit any soch ßrong and corroding Acid, withoütsomething to correct it, but it muff be injur’d in its Tone, and Labourunder great and extraordinary Pains. Neiiher does such a Mcnstrmm, tho’it will Digest some things, leern capable of Diflolving so great a Varietyofthings as we car, efpecially when a great many of them are of a contraryNature. Some will have the Menstruum to be a Nitro-Aereous Sprit, thatis Quick, and very Pcnetrating, and included in its proper Vehide;which , being in its own Nature apt to Penetrate the Maß of theAliment, does diffuse ic seif througb the whole, and breaking the Vin-culum of the more solid parts, does Diflolve their Compages. By othersit is thoughe to be some Saline-Juice in the Stomach, by which the parts ofthe Aliment are Divided and Diflolv’d, and those which are fit for Nou-nlhmenc are Voiatiliz’d. Lastly, There are some who soppose the Di-gestion of the Food to be perform’d by the benefit of a Ferment, which, whenit is mix’d with the Aliment, excites in the Maß an Intestine Motion, andthe different and contrary MotionsorTendcncy of the parts, making somekind of Collision, gradually break off Particlts from the Großer and moreSolid parts, rill they are so Attenuatcd as to be apt to mix more equallywith the Fluid, and with them to make one Soff, or Chylcus Subffance.But these also differ in their Opinion of this Ferment : For some think itto be the Remams of the Food that was lall Digested, which having lainsome time in the Stomach, after the reff is carried down into the Intestines,contracts an Acid or some other Quality, and is so altered as to partakeof the Nature of a Leaven. And this Leaven being a part of the Food,which hasbeen alrcady Digested, is so Soft and Liquid as to be capable ofmixing with the Alimer.t which is next taken into the Stomach, and beingAgitated with it by the repeated Preflures of the Diavhragm, Liver, andAbdominal Misch s, upon the Stomach in Respiration, does diffuse it seif

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