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Show Ecol" 11_ Of l/JL' flfotiwz of the Heart. 729 0f the [Motion of the Heart. 728 The Analogy betwtui the Heart and the Rope in refcrrnte ofthc flclhy Fibres endi c.) "i1 h {piral Lines. A ficuiid Simi‘iitn it by [cafnu of the numerous Pores of the H thyiihres. The third lik.nef~, by icafon their outward Cireumfcrcnce it iiotaltered. A fifth likeriei's betwetn [he l-ibres of the Heart,and the Filaments of the hope. The fixth AmIogy between them. Pooh". The Heart as it hath a curious Compagetmade‘ up of Various ranks of The Fabriclt of the Heart, as an Engine of Motion, is compofed oftna- ny Laiysof Fibres running in Spiral. Lines, which render them (bong, as elhy Fibres, encircling the cavities in many lpiral lines, holds grca-t‘Aualogy with a Clue or Rope eonipofed of many rows of Threads, whiclrbeiug Fpirally twifled with each other, do enclofe a hollouneis, lodged in the doubling their point, do obtain a new Center, and gather up their parts iiiro many narrow Circumferences, whereby they have them firongly united, inward parts of the R0pe. and do make more brisk Contraéiions toward the Center of the Heart. . Heart are 915 . r3 Again, The Fibres of the Heart are befet with numerous Force as well asthc llircads ol‘ the Hope with many Interlbccs, capable to be filled tip (as beingT both fpongy Bodies) with a great company oi liquid Particles. A third Similitude intercedeth the Perimeter of the Heart, and that of the Rope, that their Figure is not receptive of any alteration, as acquiring greater dimenfions by Expaniion, or leiier by contraCtion, when the inward ranks of the Fibres of the Heart, and the rows of Filaments, relating to the Rope, have their innumerable Pores fwelled with Liquors. . A Piithlikenefs may be {aid to pals between the ranks of Fibres of the Heart, and the rows of Threads, Integrating the Hope, that when their In- terflices are big with many liquid minute Bodies, they do not vary the Convex Surface of the Heart or Rope, btit their feveral inward ianks do make their progrefs toward the Center. ‘ . ~ ‘ A fixth Analogy, that runneth between the inward Lairs of the 1* ibres of the Heart and the Threads of the Rope, is, that both of them, when rendred tenfe and rigid with liquid Particles (infinuated into their fpongy fiib- fiances) do more and more contraé't themli'lves, as they come nearer and nearer to the Center; which Iliumbly conceive may be fetched from a dou- ble caiile 5 the fit": may be this, That the iii‘fl rank of inward Fibres is preffed Grit by the outward Lair, which doth not give way, whereupon the rubfequent rank is drawn inward by the renitence of the outward, and afterward the inward ranks being (0 many Auxiliaries tied to each other, do more and more protrude each other by their many Contraétions which are molt vigorous toward the Center. A {econd reafon may be taken from this, That the molt inward ranks of Fibres have their Pores moi‘t highly Filled with molt linall liquid Bodies, and thereupon they mofi briskly Con- tract near the Center, and do ioyntly and perfectly clofe on each fide and Wholly fill up the Cavities, relating to the Heart. The Walls of the Heriit are brought near- er to each otherby l'ulfatiou. wmpolaed oi many Segments of Circles, wherein the crooked Fibres by The rcafim nhv t‘ l-‘i'r hrs of the This curious Machine oi Motion is ltrougly affixed in its Bare, to the Back, by great Trunks oi the I'c/iir (2:124 and Aorta, ( adjoyning to the Vertebres) by whofe interpofition the Bail: of the Heart is kept firm and fixed, as not disjoyncd hour the Back in its repeated Pulfations, which are exerted by many ranks of Prrong Heihy Fibres, Feared within each other in elegant order, and mutually tied by the medi..rion of many Ligaments, and the entercoutfe of \allOllb Fibres, wonderiiiily interwoven, and flrcngthning each other; So that they are mutually allii‘tant in joynt Contraétions, whereby the Cavities are more and more leflened, as the Walls of the Chambers of the Heart are brought nearer and nearer to each other, till a perfect clofure of the [ides of the Ventricles are made, and their intermedial hollow Spaces wholly taken away. _ The rare Compage of the Heart much refembleth a Clue or Rope, as made up of many Lairs of innumerable Fibres (interwoven in Spires; So that they cannot be extended in length into right Lines) implanted into {trong Annular Tcndons, as {0 many Hypomoclia, or Centers of Motion 5 and the Termin ations of the molt inward rault of Fibres are mutual ly tied to the Con- / cave Perimeter of the Hearr. The {porigy liibliance of the Helhy Fibres, is receptiVe of numerous drops of Blood7 which are infinuated into their innumerable Pores, whereupon the Compage of the Fibres groweth big, tenfe, and rigid, (after the manner of a Clue or Rope, whole Pores and Interfliccs of‘iniiumerable Threads, are filled up with a great number of drops of Water ) whereupon the Fi- Contra/sh bres (being irritated by the difiention of their Compage) do endeavour a freedom from, their burden, by Contracting thcmfelves, not by bringing their Extremitics toward their Middle, (as it is effected in the motion of other Multics) but by drawing the Mufcular Fibres of each fide of the Heart inward, by a mutual Approximation, in order to which the Columns and other Fibres ( feared in the infide of the Heart )‘ do molt {irongly Contraét toward the Center, as being the largefl, and highly dil‘tended with more numerous drops of Blood, then the more linall Fibres (placed more remote from the hollow Perimeter of' the Heart) which do Contract more faintly, as being finaller and lcfs tenfe, and more remote from the Center. The Heart may be laid to be compofed of many Mufcles , as into: gratedof Everal-great fielhy Fibres, and every one of them is made up of Veins, Arteries, Nerves, and many Cainous and Tendinous Fibrils, making up :1 Mufcular Compage encircled with, a proper Coat, into which many Tendinous and Nervous Fibrils are inferred; whereupon a great fource of Blood being impelled into the Cavities of the Heart, is drilled againf‘t the Coats of the flelhy Fibres, befet with numerous Fibrils, which being irritated by a quantity of Blood highlycomprefling them, do more and more Contract themfi-lvcs toward the Center, till the walls of the Heart mutually clofing, do li]llCCFC out the Blood into the Origens of the Pulmonary Artery and com- mon Trunk oi the Aorta, whence it is tranfinittcd into all parts of the Body, as their great Prefervative. ~Tog-inc a more Full account of the manner of its motion, ceive it is not accomplilhcd by drawing the Cone of the HeartI humbly contoward the Bade, but by the 111L1tllalc0t1jllll€ti0fl of the Sides, relatin g to the Ventricles of the Heart, and not by lciTening the length of the Heart, which may admit a proof l‘vfcchanically, by reafon if the Munro and Bafe be drawn toward ilie Ii‘iiddle, it muf't be performed by a multitude of flefhy Fibres i‘mc planted into each Extremity, of which the Bale is wholly dcfliture, and the Cone hath but Few inferred into it, bv rcafon mofi of the Fibres tending ton ward the Corie, do not arrive it, but are reflefie d toward the Ventricles, into which they Terminate. Another Argument may be brought againflzthc Motion of the Cone to? i'i'ai‘d the Safe, becaule almofl: all Fibres of the Heart, which are very nu-‘ Efrem, are carried either obli uely or traiifverfely about the fides of ""1113 whichare litrfcr with many Lairs of Fibres, mutually comoyiied the by A 9 The bits .g liwngy, gto‘fl big "itl! Blood, and thcuc: are ir-j ritated to the Man y Tcmiin nous Fibres arcinferted into the Car. nous. The motion of the Heart i; made by drawingthc‘ iiifirles of thc Ventricles cloi'e to each other. |