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Show Book II.' immediately above the Origen of the Lungs, and the Heart endeth in an acute Cone. The Aiiricle of the Heart + running in length, and not crofs-Wife, as in Fill], einbraceth a great part of the Right Side of the Heart, out of Whofe obtufe Cone, or Bafe, arifeth the Trunk of the Aorta. r}- C H A P. XXXI. 0f the-Arterier of the Heart; CHAP. XXX. HAving fpoke of the Heart and Blood, it may be now methodical to difcourfe the Arteries and Veins, as lo many Membranous Cylin« ders, exporting and importing Vital Liquor From and to the Heart. ‘T/Je Heart; of Iii/65ft. TheArteries of theHeart are Trunks, attended with fmaller and fmallet Branches, and Ramulets, as ('0 many fine Tubes of different fizes, tranl'mit: ring Blood into the Heart, Lungs,- and' Other apartiments of the noble The Heart tr He heart of a Silk-W orm is feared among the Mufcles, implanted inZni'lls‘s‘ufl to the Incifures, and palleth all along the Back from the head to """4 the Extremity of the Body, fo that its Pulfation may be obfcurely difcerned in the Ambient parts, ( by the appofition of the hand,) as a Learned Anatomilt will have it. Iliave feen the frequent Vibrations of the heart, when ithath been laid bare, by opening the Body. Th, COWS: Learned Malpigbim faith , It isa Compage made up of thin Membranes, H Um llwr- which in their firl't rudiments are Diaphanous, and afterward grow opace, as being rendred Yellow, and afterward Brown, or deeply Red, which are Died with the vital Liquor, hued with feveral Colours, The Mem- AndI humbly conceive, With Deference to this great Author, That the heart of this admirable Animal, isnot only made tip of a Meinbranous fub- fabrick of Humane Body. The Heart is furnilhed with three Arteries the Pulmonar t‘ Th" Arm" Coronary. The firlt being inferred into the upper part of‘thlfleridgli‘falfet ig OHMHWV tricle, hath its Orifice leading into the Lungs, whofe fubltance is adorned with numerous Divarications; TheOrigen of the Pulmonar Atter is befet with Tr' ‘ i 0 ii t hindring the reflux of Blood out)bf the lungs into the rightlcCufigiiihleXalveS, ghziificléo o The Aorta hath its Orifice placed about the left Ventricle which firfE "zonal: conveyeth Blood into a common Trunk, which hath its firl't entiance guard~ mum" ed With Semilunary Valves, to give a check to the Retrograde motion of the Blopg oat 2f til? Aorta into the right Ventriele. e ri ceo the great Artery is contrived with teat Artifice 1 figf‘ffi‘fr‘fl' fiance, but of fine carnous Fibres too, befetting the Ventricle, which is Blood conveyed with a brisk Impulfe, fhould be unetglually diltribiitefifiihfl: fillirliihiw thereby contrafted in its frequent Syltole, impellmg the Vital Juyce out of the parts of the Body; and therefore Nature hath made the Arterial Channels of Blood fomewhat winding, f0 that it cannot be tranfmitted with a rapid current into the Brain, lel't it {hould overflow it and defiroy the Animal Functions, by an Apopleé‘tick Fit. To obviate this deltruétive difeafe the All-Wife Agent hath f0 ordered the Trunk of the Aorta not far dil'rant from the confines of the Heart, that the Rivulets of Blood {hould not be carried in a; {traight courfe, but in a kind of Meander, into the Axillary and Cervical Arte-~ riesgAnd in the middle fpace between the left Ventricle and faid Arterial Channels, the great Artery taketh its progrefs with a Circumvo lution, that its cgooked Angle might fui'tain the fit": brisk impulfe of the Blood, and divert t ye greater (tream ( toward the defcendent Trunk of the Aorta) vyould beimported with great violence through the afcenden which elle t Trunk into t ie Carotide Arteries, and make an inundation of the Brain. "mi taiiioiis the Chamber of the heart, into the entrance of the great Artery, which Hm being encircled with fine Meinbranous Valves doth intercept the retrograde currentof Blood out of the Aorta, into the Ventricle of the heart. The hearts of mol't Animals end in a Conick Figure, but in this not one W Hem Cone can be feen, nor one continued Cylindrical Cavity may be difcovered to be endued with equal Dimenfions, running through the White Body of the heart from one Extremity to the other, but there may be found a Duct, :ii‘iiiihril made tip of many finall oval Tubes, which feem to conflitute f0 many mg???" Hearts. Thwart"; figfl'yffrc' vrhcxlr‘msr hearts, iniituallyconioyned, givmg affillance to each other, in order to impel the Vital Jiiyce into the origen of the Arteries. The heart of an Eplienieron, as well as Silk-worms, Bees, Caterpillars, Gralhoppers Locufts, and the like Infeéts, are feared near the Back, and hath aVentricle befet with fine flelhy Fibres, which make the Motion of the heart by their Contractions, whereby the Liquor of Life is impelled out of the Ventricle of the heart, into the Origen of the Aorta, and from thence through many Arterial Divnrications into all the parts of the Body. - d' Tilie Coronary Artery fprouteth out of the Trunk of the Aorta, immea The Comma. latte y after it taketh its rife out of the left Ventricle of the Heart, before it ‘Y‘m'y' penorares the @ericardium, and encircleth the Ball: of the Heart, and tranfa mitteth many branches toward the Corie, efpecially in the left Side. "This Artery receivetli Blood out of the Trunk of the Aorta, and tranll II‘I'llgeth it intothe fiibflanee of the Heart, and chiefly toWard its outward ur ace, which is then difcharged out-of the @4renchyma of the Heart into VXU‘lethS of the Coronary Veins, and afterward into the Trunk of the the "la Cam, and right Ventricle of the Heart. 1' .If any be f0 curious as to make a feareh into the firfl formation of the Ar- ThefirflrroCINCS3 I humbly conceive they are produced after this manner; The Vi. $530221:"he ta Liquor recechch its firlt Rudiment in the Seminal Matter, wherein O 9 the |