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Show Part I 1, Book I. Part II; 0f the Melentcty. 389 Hair 4 Treated of tlic L‘Atericsfllcins, and Nerves, i' will now take the freedom to nuke a deltr'iptiozi of the Milky Veii‘els, and‘to Iliew how the, nuke their progrels through the i‘xdelentei‘y, and are inlerted into the Con: mon receptacle, into which they dilcharge their Chyle. The latte-.11 Veflels {rein to take their rife from all the lnteliincs, except the Dzmrlmlm: and mm, and forne from the Stomach, and a few from the Calm, and lute/limo" Keillor], and mollt from the 7tjumwz rand 1/6022. Thole l\/lill<y Veins, immediately alter their Origination in the Guts, do ":5 addrefs themfclves to the next part of the h/lcllntery, and are carried fume. times in a firefight, and other times in an oblique Dnél, between the Tuni. l cles of the lVlZfl'rntery, and make frequent inoflulacionc With each other, that. one Branch might lhpply the defect of the other, upon Obl'truélions. Theft: Vell‘els may be eafily dillinguilhed from the Mefaraiclt Veins in Tm reference, they are clothed with "hire, and do {port tllt‘ . films in various Divarications, pallinp, between the Melhraiclcs, and are carried into the Glands ol‘ the Mt'ientery, and being divided into numerous Ramulcts, often allbciaring each other, do unite in one common Trunk (as Learned Dr. Wharton hath well oblbrved) before they are implanted into the Gland, into which they inlinnate thcmfelves After their ingrelé into the Glands, or a little before, they make new r: mifications, and are divided, and fubdivided into leis Branches, and (1&0 r-hcremd mafia," MS- ward dye in the body of the Glands. The Capillaries after they have loft themfelves in the inward recellbs of the Glands, other new ones fprouting out of their Parcnchyma, do Coalefce into one Trunk, which being carried toward the Origen otthe lVlefenrei-y, doth meet with many other Veins of the fame Tribe much enlarging the common Trunk; and the various Channels of lWilky Vt-iicls, coming from feveral Glands, do at lal't disburthen theml‘elves into the common Receptau cle, asintoa Cifiern, or Lake. mwmm Learned Dr. Hz'gbmorc didconceive the Milky Vefihls to inter: them; gaiuigwtnic {elves into the Pancreas and I iver. €412.72 Drfqmfinomr Ami/omit. 1262533? All imefliniJ per Mefinterinm oblique (1146711, inter dim/s ejm' nmz'ms, partim fr‘r‘l‘ l"'°‘:":d orflm a waflr rc/iquis, parrim um um: illir maria M570 (luau, modo tacit"! Ira/1- , "WEE frendenter, c7)u «velmz' detifililfef per [ll/ire; Glandular in ‘Pantretw 14/7; perflzrmzEvlnphb tur. In (Pancreas maria Cancellomm in modum we] Capreolarzmz, implant; flbi "a" mutuo confuflc, in plurimor, eofq; inexplicabiler Gyros, mzfraélufq, bar illac infor- quenlur, ab ea rurfnm majorilm: paulo furculit, per (Porter? latem uizdiqlldquu, qua/11 quibufdam in loci/t ammli inflar cilzgmzt, in '7ctorci Ca-z/am fltbeant, indfi i114": in hepatic parencbyma, ibz‘ quaqua werfimz clifll'minanmr, alum 1777))le oblilitcrcmur. But with the leave of this Learned Author, the Milky Vellels upon a curious fearch, do not all infinuate themlclves into the body of the Pancreas, and do only pals near it in their progrefs to the common receptacle, and no ways encircle the fides of the Venn porta, like a Ring, which is only pro pet to the Lymphaeduéls in their progrel‘s from the Liver, and is the occafion of the mil'take of the Learned Author, who conceived the Lymphatdué'ts emcompafling the G'orta, and derived from the Liver, to be Milky Vefl‘els, which the Lymphaeduéts do much refemble, b0th in likenefs 0f .Colour and Subllzance. Thefl: Thefe Veflels are furnifhed in their inward Cavities with many Valves, T‘XCYZIV‘CSHF open inward, to give a free paliage to the Chyle toward the origen of the idiwiiligthii Mefentery, and common Receptacle, and hinder its recourfe to the inte; giréifyiec‘liif Print-5'. Thole Valves, by reafon of their fmallnefs, require a curiOus Eye, ""6"" allified with Art to infpeé‘t them, and may be rendred Confpicuous by this Experiment, of prelling the Milky Velfels toward the beginning of the Melentery, whereupon the Laéteal Vellels grow lank; bu: if the preflhre of them be made toward the Guts, they appear turgid with Chyle toward the Valves, whereacheck is given to its Motion, as forced toward the In; tcflines. And upon this account in hanged Animals, being firfl Well fed, and Opened three Hours after, thefe Milky Vefléls may be plainly dilcovere d; whichI have feen in Dogs , and other Animals, Diflcé‘ted in the Colledg Theatre: But after the Inteflines have been handled, and tumbled up and down to fee their proper fituation, the Milky Juice is tranfmitted into the common Receptacle, and thereupon the empty Veffels difappear. The ufe of thefe finc Vell'els, arayed in white, is to convey Chyle from Thcufhofthc the Intefiines through the Mcfentety, into the common Receptacle, which M'lky Wk" is firilto couis rcndred very plain by the white Colour of the Juice contained, and car- {fieyfil‘rlcfif ried through tho‘fe Veins, which cannot be dilcovercd after the white Li- £33fo": quot is diflributed into the common Ciflern; whereupon the Chyle bein the common dilcharged, thefe thin Tranfparent Veflels do immediately difippear, which mem' Ihumbly conceive, was the caufe that thefe fine Tubes lay lb many Ages concealed, by reafm they appeared only to the view of many curious Perfons in former Times, as f0 many Fibrils, which fome conceived to be Nerves, and others (though very unreafonably) to be Blood VetTels, by teafon they are tinged with a different hue, from the Laéteal Veins And the ufe of theft: Vellelsof conveying Chyle through the Merentery into A" "PM; the common Cifiern, may be farther made good by this Experiment : That ifin Euchrtiiismiiif aliving Animal,three Hours after he hath been freely fed, an apettion be made WM" into the Abdomen,and a Ligature be put upon the middle ofthe Laéteal Veins, immediately will arile a Swelling between the Ligature and the Guts, and a l anktiels will appear at the fame time between the Ligaturc and the origen of the Melentery; which procecdcth from the {ituation of the Valves, garnilhing the Milky Veffels. _ > Now fomcwhac may be [aid of the manner, how this Milky Liquor is Themanncrof tranfmitted through the Mefentery, into the common Receptacle .: And hifbiiiii tl'is, I humbly conceive, may be accomplilhed by a double means. The flzfi‘v‘"; firll: may be the gentle Contraction of the Guts, ( made by carrious Fibres :13 thficofilin their Peril'taltick Motion, wherein the Chyle impraegnatcd and diluted by agile. my. more fluid and excellent Particles of the Pancreatick juice, is impelled into the Origcns, or R oots of the Milky Vell'els, whole pores hold an analogy in lhape and file, with the particles of the Chylc, and thereby give a reception to this (Elect Alimentary Liquor. The‘i‘IEcond way of tranfmitting Chyle through the Meltntery into the common Receptacle, is more powerful, and afliflant to the former, and are the Mufcles of the Belly, which contract themfelves in Expiration; and thereby comptcls the Guts, and fqueclé the purer parts of the prepared Aliment into the Orifices of the Laaeal Veffels , and the more grofs Excrements the reliques of Concoétion, having [magnitudes and Figures different from the Orifices, or Extreamities of tlitiMilky Veins, are fecludcd their Cavities, and are protruded from one Part of the Guts to the other, as dilTerviceable to Nutrition. Hhhhh Th |