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Show Of in Motion of the 191004. Book 1?. and the fame mechanical a€tion ; by reafon the filaments of the Cloth were Iaxe before their Contorfion, as having many interflices, obtaining a reple~ [ion by many drops of Water; but afterward when the Cloth was varioui‘. 1y modelled into divers wreaths, the filaments were forced to make many [~in impellrmt direffo mom a pcrz'pberia ad Cordir tantrum Sangirineum L'i inclm um. ‘ Circumvolutions about the body of the Cloth; whereupon the threads were not only lengthened into oblong Gyres, but were alfo leflbued in gl't‘fttcl' conllrié‘tive power to the Fibres of the Heart, their in the beginning, fiices ofthe Filaments of the Cloth filled with Water, in which the Threads re quire greater Dimenfions in length 3 but the Fibres of the Heart are rather contracted, according to the nature of all Mufcular Fibres, and the Carities of the Heart grow greater in breadth, as being expanded by the repletion of Blood; and above all the Pores of the Fibres, and Cavities of the Ventriclcs, are not emptied by any Contortion, as it is made inward in the Filaments of Cloth, when the Water is fqueezed out of their Interfiices; but the Blood is firained out of the Pores of the Fibres, and Ventricles of the Heart, not by various wreaths, but by many corrugations of the Fibres more and more contracting, as they come nearer and nearer to the Center of the Ventricles, whereby their Walls are brought clofe, and briskly dafh againlt each other, produced by the firong Contractions of many ranks of Fibres tied together by firm Ligaments, and a mutual entercourfe 3 ['0 that the {ides of the Ciflerns ofthe Heart, by joynt appulfes beingr dalhed againlt each other, do fqueeze out the Blood not by Contorlion of the Fibres: (as when the Water is wrung out of the Interi'tices of a wet Cloth by the force of many Circumvolutions) but by the mutual Contacts ofmany ranks ofcontraéted Fibres, running clole to each other, whereby the Concave Peri- meter of the Ventricles is taken away, and the Blood fqueezed (after the manner of a Prefle) into the adjoyning Blood-Vellels. Learned florellm is of an Opinion, that the eonfiriétive power of the Heart is leis then the relillance which the Blood maketh in the Ventricles of the Heart, as this renowned Author hath it, Toma adv-De mom animalium Propof 70. 7'. r 39. rPoremid Carola hfufculum ran/fringe"; minor cfl refiflentiz, qua»: exerter filllgllif in «venirirnlis ejnr Contentur in proparrz'ane firéfefqniarem 3 which ii true, (as I humbly conceive) the Blood would be flaguant in the _Ventricles, as over-balancmg the power of the Fibres, by the refillance of its Elafiick Particles, countermanding the Appulfes of the Fibres, upon the Blood, in 0i‘de‘r"_to its Comprefiion and Exclufion, which contradiéteth Experience and Autopfy, becaule the Fibres of the Heart do more and more contract as they come nearer to the Center of the Heart, till the Concave Surface is reduced toward a Plain, whereby the conflrié‘tive power of the Fibres do fo highly-comprels rm..- 4.1..«1- 1‘ Of the [Marion of the (Blood. Ouid extra in bar affirms mgitalrbur mommlir per eofdcm t/mmetmr , rode/yr. gnawyporcfit iii/pulfw (sinful/par, er 0 polemirr Frbramm Intermrum (qualms rt zficnritc sill(fl1(i7lif allcis ((Wlllrcjjl ‘So that here this Great Author grantetli a bulk, and rendred more tenfe; but the repletion of the Cavities of the Heart with Blood, was made in a different manner from that of the Intern IareL'M Opinion, that the Confli i[tiie Power ofthe Heart is lel'stheri ill: Lmlaucc of the Blood. Book II. the Blood, that they wholly overpower the re- liltance it malteth in the Ventricles, by impelling it into the neighbouring Sanguiduéis. The External Fibres of the Heart, (as the The reafnn of {aid Learned Author apprethe Authors fard Opinion hendeth,) do aé't after the manner ofa Rope, encircling a Globe or Cylinder 5 0 that the power contracting the External Fibres of the Heart, hath the {321C proportion in reference to the refiftence of the cornprefTed Blood, as a . emidiameter to the circumference 5 that is, faith he, in the recited Page, that the power of the Fibres is lefs by a Sixth part then the refiliance ofthe comprelled Blood. Pmlerea, air ille At Fthat Cardis profimdiorer @- Exter"am/11pm?" (at/or agmn raga; (7 plied: infiando (9 adeo afiiane Curie-i, 'z/el Embali or propolition ot‘tlie Chapter, where he faith it is inferior to the rclilltance the Blood malteth in the Ventricles of the Heart, to which I have given my reply above, for which I humbly beg pardon in notcomplyinqhwith his Learned Settle , which I fubmlt to the molt Candid and ludicrous Reader. . a ,. The manner oi the Motion of the Blood havmg been dilcourled, now followerh in order the Quantity of Blood that palleth through the Heart exery pull‘ition, which lome Anaromif‘ts have made very inconfiderablc, as be- I, in? a Setups, Druhme, or hallan Ounce 3 And I humbly conceive that the Heartlu'ety Pullation. Heart of ,rer A i: ials as endued with more large Cavities, are receptive . a _ , Y P of a greater proportion of Blood, of which the chief part, if not. all, is dill charged in every Silltole. . The Vcntr‘h Iii every Diafrole the Cifierns of the Heart are filled With Blood, and are enrx rid every Sillole into the adjoyning Sanguiduéts, by realbn the Walls ties of the Hr art are filled every Dinfi oi the Ventricles are {0 clolely conjoyned by the {trong contraéhons of the Role, and emptlcd C\ e- Fibres, that the Blood mult be wholly lqiieczed out of the greater CaV'ities of the Heart, into the linaller Cylindres of Arteries in every Pullation. This allertion may be made good in the Dilleétion of live Animals, wherein the Cone of the Heart being cut OFF, and 2 Finger immitred into the Left Ventricle , it will be found to be highly pinched by the firong Contraction of Fleihy Fibres, narrowing the Cavity of the Ventricle; whence it may be clearly inferred by the fame reafon, that the Blood contained in ty Syflole. An Experiment in the Dilution of live Animals» the bofom of the Heart, mull: be dilcharged by a powerlul Compreflion in every Syliole. This Hypothefis may be farther proved by ocular Deinonl'tration upon l the opening the Bodies of Frogs, Eels, Vipers, Snakes, (fave. \VhCl‘Cln‘lt may be plainly dilEerned that their tranlparent Hearts turn pale every byf'tole, as having their Ventricles empty of Blood, and their_ hearts‘gtow Red again in the Diailole, as filled with fireams of Purple Liquor, tinging them with a more vivid colour. . And by Analogy of Reafon, the Cavities of the Hearts of greater Animals are filled with Blood in every Diafiole, and emptied in the Syliole, though it cannot be difeerned by reafon of the thick and opace flclhy Walls, within which the chambers of the Heart are enclofed. Thefe Premiles being granted, it will not be diflicult to compute what quantity of Blood palleth through the Cyf'terns of the Heart into the Sanguidutfts , in the {pace of an hour; and upon a fuppolition that Two Ounces of Blood, as tranfinitted out of the Left Ventricle in every Pulfa- tion ( asCreat Dr. Harri/e}, and Renowned Dr. Lower have oblerved) and that all the Blood received every Diafiole into the Cifterns of the Heart1 is dillhatged by every Sillole into the adiacent Sangurduéts, and thatflin the lpace of an hour, Two thoufand Pulfes being Counted; ‘1! Will follow of necel'lity, that Four thoufand Ounces of Blood are carried through ‘he bofom of the Heart in Threefcoie Minutes; 80 that the laid quantity Of Blood doth amount to Three hundred thirty and rum pound; and it being ruppol'ed that a Man is furnifl'ied with Twenty five pound of Blood, D 9 wine: The quantity of Blood receive i in everv t‘iallole, is whollydif- charged in every Syllolc of the Heart. |