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Show 0f the Motion (f the Heart. 726 The mall in- "Mil rank of Mines art the gritefl. Book ll. Winward Lair of Carnous Fibres have greatelt {)iincn‘lions, an?! the next ranks grow linaller and linallcr, as they mofre ant "inure app-,oazn the Circumference of the Heart, and all the rows 0 Fibers 4 AT, 6:111 fiuéll' interwoven, and lirongly tied to each other by Infill-y‘i,;1::.1llle:lil:‘;llld __ . Lin‘ l'ibres, which I have often clearly Viewed upon Dillec‘t-io‘ns .1 IAC‘LTiP‘ii, the many ranks of Fibres being firmly and mutually conioynet, clo y:)}1[; allill; each other as one Compage, in order to move the Heart, whioi is mace inward toward the Center, in which the molt Pcrong fibres are leated, rials moFt able to Contract the Ventricles of the Heart, and make the more l:i::.\ impulle of the Blood into the Origens of the Arteries. , . I , ‘1 he in- The Arm, or lnterl'tiees of the flclhy Fibres (interwoven \riti cam tr C ll ll‘,' other in a kind of Network) are endued With variety of ‘l‘igures, loinc relcmbling Rhomhoids, others Prihnes, athird Ovals, and a fourth hare leLon; {igutts veral irregular lhapes, and different magnitudes. ‘ ‘ . The ll" , And thelc liefhv Fibres have not only divers empty {paces interccding their bromc but numerous interli‘éiimis, and Plexcs but the Fibres theml‘elvesare belet wrth wth many fina'l I‘e; cs. numerous minute Pores, c.1pable to receive Vital liquor, which dillendeth the Compage of the Fibres, rendring it tome and rigid. , Learned Bore/[1:5, a great Malterot Realon, as highly verfi-d in the NI; 1larr'm, his IL , thematichs, hath Niechanically lllulirated the Motion of the Heart, made up of divers {piral Fibres,by a Clue orRope, confilting'ol many Fhreads, lprMcthanittllv, rally interwoven, as he hath it L21). 2. dc mom Annual/Hm, (up. II. to p. 93. l7§'fl( hr of nto {Bird 'Prryvf XLIH. Si (Ii/0mm rompofztm ex fibrir (8/1116 may?! at fimzlzr conflflcnlm' 'lliitaj, (omen/rite, five fpiralitcr z'zmolutir circa Veficam inflamm, zit 12.1ht'z1tt'47/1Izzte"; interwar/ram. Dim quad fl per [JIui/efilationcm fi/ormrz (Inuit/m <glow: rep/eating ffiiixc intermmglami zzcrcflin'io Lbrrugari (Ir/mu, revmnemilzitr exterim terfi: , If a Clue be compol‘edof many threadso-L equal greatnels and confiltence, concentrically or lpiraliy wreathed about a Bladder blown up, that it may have an intermedial Cavity; "By, That ii~ by the moilliningof the threads, the cavity or the Clue beil'illed, the inward lpires of the Clue mult neeeflarily he Corrugated, the F,\ternal remaining renle. And that this Hypotlielis may be more clearly under-flood, 21 Hope may he Diamctricallv cut, out of which being dry, 3 Circular Zone will arile, ui; hinted oi Cdntiguous liiiral, or Concentrich threads 5 But in a wet'Rope cutthrough the Axis, a Circle will appear, confiPting of tenle Corrugated threads, which being of an equal bignefs and confidence, as equally Porous, do obtain a proportionable Tenaner and Corrugatiou, as filled with the like mealirre of drops of Water. The ambient parts or the Rope made up of many Threads, are not eafily capable of diliinion, by realon the Threads cannot be extended in length, as clolely lodged within each others embraces in Spiral Wreaths, and is lilled with warty drops infinuated into their Pores; whereupon they are [0 lltongzly Contracted, that they refill, as if they were encircled with Iron Hoops the Renitence of the inward diliended parts ; So that though the out- ward threads oF the moil'tned Rope be filled and thickncd, yet they do not render their tenfeSurface more Prominent and Convex,as having their outward confines Ptrongly bounded by Spiral wreaths ol‘ numerous Filaments varioullv interflcting each other, which give a check to the fwelling or expanlion of the outward \Valls, or Perimeter of the Hope; 80 that the Com- page of the more inward threads muPt neceflilrily acquire greater and the more internal ranks of threads are more and more forceddiinenfions, inward as they approach nearer and nearer to the Center of the Rope, and fill Up the Cavity of it. ' The Boo}; ll. Off/10 e91one" 0f the 1'Jam. The outward ranli of~ Filaments makin g the circuinleren ce oi the wet Rope, doth remain rigid, Without any greater expanfion of its Convex Surface, as not obtaining a more elevated ['rotu berauce 5 but the llll‘ili'qthnt or lecorid ranlt ot‘ moiil‘ned Threads, doth nor oliler ve an equal tenliiieis with the Ambient, but: being pulled up with warty Particles, and no: harino their Convex Surface more Dilated, muff of needli ry bend inward, uh: their Threads are Corrugated, as lhortned in diners parts, thereby liiliuq no the cavity of the Rope tending toward the Center , as the C(incM'C S. ..:.c. s lodged within the Flexures of the outward rank ol‘ lliortncd Filaments do approach and eneixcle the Convex Surface of the more iiii.v.1i'tli‘anlt ;whereby the \‘arious ranks of Filaments heated one within another, as they become Contracted by having their innumerable Pores ltullcd with watrvParticles, do more and more promote their courie inward as they come more and more nearly towardrhe Center, till theinward cavity of the lope is whollyfilled up by the various Corrugations of the moilined Filaments. \thnce it may be inferred with good realon , That the inward lpires ll'c hoard of the Clue are allec'ted with unequal Corrut ot'rh: rations, as they haveinore Spins Kore." 1'. Flexurcs, whereby they nearer and nearer appro ach the Center olithe Rope, L which 1 humbly conceive is accomplilh ed upon a double account . Firll by rea. . {on the more outward ranks of~ Threads, . _ i beinggrtat with liquid Atoms, do [Contract themlelves inward, and do prels the next fiibhequenr ranltsmore and more toward the Center of the Clue 5 and Fecon dly, The lpiral rows of li‘ilaments lodgednear the Center, have their Pores more diltended with watry drops, and are thereupon coritraéle d into more Flexures, as they come nearer to the Center of the moifined Rope. I And upon thefe Premifes it may be farth er proved, That the external Figure of the inoiliiied Clue, tetaineth the lime Polition, as not heinr; Expanded nor Contraé'tedg and firll: of all the Threads of which the outward face of the Clue is compofed, canno t be Dilated, as not beino capab le of a farther extenliou in length, and as being clofeiy and {trozgly conjoyned in Qpiral Wreaths, in manner of a Rope, which being: inoiltned, it's twilied threads are f0 firmly boun d together in the Circumference that they will not give way, that their Convex Surface may admit a farthei Expanfion or greater Protuberance Secon dly, The outward threads of the Clue cannot be Contracted , by reafon the ments is rendred tenle and rigid, as having Compagze of the ‘inward Filatheir Pores highly filled with wa- try Particles 3 that the inward ranks of Threads by their great fiilliiels and renitence, do To beat up the moli outwa rd, that they will not admit them to bend inward, and thereby makea varia tion of the Figure of the Heart. Fatthermore, to make the Inf'tance more appli cable to our purpole, I will take the Freedom, with your permillion, to make this addition, That a hollowed Rope is made of many Flaxen Threa ds, Spirally interwoven, and that the outward rank of Spires, admitteth no change of Figure, while the more inward rows grow big by having the Interf 'tices of their Threads filled with wart y Atom-3 5 and by realon the inward ranks when dilteuded, Cannot heely Dilute rhtmihlves toward the outw ard Perimeter of» the Hope1 they are forced inward7 and are Corrugated into many finall Flexu res, which are rendered more and more numerous, as they come nearer and nearer to the Center, 5‘0 that the varioufly Contrafle d Threads of divers inward ranks, do make their ping Eniore and more inwa rd toward the Center, till they wholly fill up the cavity of the Rope, while the Figure of the utmol‘r rank pt Titre-«ls, 4r» 11' teration of Figure, either bya greater Expanfion or C ,t The |