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Show 0f the Ear. 930 .- $314711; Bool; Ill. 0f t/gg E", I i 92" This fine Auricular Structure is curioufly wrought with divers ProceffeS Thigh-he and Cavities, rarely intermingled, and lodged within each other. Ear. The needles of the Auricle are Two, Helix and Ambelixg the Helix rilrfi'fi‘fstiriié ferh near the Lobe of the Ear, and afcendeth in a femicircular Figure, about amicEar- [he greateft part of the circumference of the Auricle, drefling it like a Frinue. 11.: 2.111.512. Ttv Cavities rvahe Ami» (It. 1!.i:.F.i.f/‘, The other more inward Procefs being oppofite to the Helix, 15 therefore called Antbelix 1-, in fome degree anfwereth the other in Model, as being fomewhat alike in a kind of femicircular Figure, and are in other refpeéts different, as the Ant/Jelix is more hard, and lefs in circumference. The Auricle is beaurified with Three Cavities, the Two uppermoll are . lodged between the Two Proccffes of the Ear, as their proper boundaries, and the highelt and greater is placed in the upper part of the (Pinna, betwren the Helix and Antbelz'x, and is named by Caflieriws r‘Placmtiflm, the Stapula or Naoicula of the Ear. The Second or middle Cavity, calledConcha, '1‘ being feared below the common Cavity, as holding entercourfe one with another. The Firll: windeth under the inward Flexure of the Helix, and then pafling on, the Ambelix bendeth its courfe afterward under the inward Verge of the Ambelix. And the reafon ( as I conceive) why the highefi Cavity meeteth with the middle, is the more ready to convey the Air, the vehicle of Sound proceeding out of one Sin/M into the other, and thence into the Third Cavity, the entrance of the Auditory paffage. _ , $111,522;- The lobe + is the mol‘t pendulous and loweft part of the Ear, exceedv immune. ing the Timur in thicknefs and foftnefs, as having a fubflance more like Fat, then Flelh; and is perforated in Perfons of quality, in order to be adorned with cofily Pendants and Jewels. The Auricle hath its connexion with the 0; (Petra/3m, to Which it is fa{lcned with a molt firm Ligament, which is propagated from the G'ericrani- (.ltr. The the niche A it Me. ful penance of a confufed, and dull hearing of Sounds, which being in].- mediately reprelented to the inward Ear, do referrib‘le the troublefomeamurmnres of running Pct-cams of Water, or the ' unpleafant mufick of a {inning Gralhopper. Ambrlix, in the middle of the q'izma, is lcfs in circumference then the for. met; and thefe feem to be two dillint‘i Cavities, but in truth, are but one The \‘efl'els (If the Auri- of Hearing, of which they have a fad experience, whofe Auriclcs are cur Off by Wounds, or loft by Difeafes, which expofe the Patient to the dole.- mu, whence it tendeth toward the @roceflm Mammiformis 3 and arifeth with Five or more Roots or Origens, which approaching near the AuricleI grow into one Trunk, implanted into the top of the gibbous part of the outward Ear, llrengthening and allifiing the Cartilaginous Region ( to detain it : more firmly from falling downward) which confiitutes the upper and larger part ( f the Auricle, rendring it open by Expanfion, and is fixed to the 0! @crrafiim, by a lirong ligament, propagated from the Pericmm‘um. The Auricle is furnilhed with Three kinds of Veffels,Arteries derived from the Carotides, Veins from the external Jugulars, and Nerves principally de' ‘ rived from the Vertebrals of the Neck, and from the harder Branch of the Fifth pair; coming from the Medulla oblangara, and are difperfed into thc fides and gibbous part of the Tunicle. The outward Ear being made up of many Subfiances, Proceifes, and C" sides, is not formed only for Ornament and Security of the inner Ear, bl" is configned by nature to other more excellent ends. The Auricle being elegantly expanded at the entrance of the Ear, is endued with ConCave Flexures, at the fame inflant, as well to break the violent motion of the Air, as to give a handfome reception to Sounds, which are conferved alitLlC fpace in thefe Cavities, where they fport themfelvesin thefe concave M" antlers, and thence are readily conveyed into the Auditory paflage- T e k 0, Terry/um, and confifteth of many parts, the Meant: auditorim, Tympamm ; a and Four fmall Bones, MalleMJncM, Staper, Onorlzimlare, feneflra'ranmrla) and Orr/Ali: 3 as alto the Two Cavities of the Labarimbm arid Cot/ea. ) I The Auditory paffage 1- may be fiyled 3 Pipe, made for the conveyance err. p . , of Air, tuned with variety of Sounds, and taketh its rife from the Com/m "I5 Wish. the Second Cavity of the Auricle, and terminates in the Harp/172m"; It is en: wag" dned With a round Figure, fomewhar larger in the firl‘t entrance, and grow(Th a littlelefs toward the Tympani", where it cndeth, and palleth thither from the (om/m in a Windingr conrfc, through which it is covered, all along within a thin Membranous Vail, derived from the @crirmnium, This crooked Duét fomewhat afcends, to prevent the fall of fotne troua' blefome Matter from without, and that the violent Appulfes of Sounds may be fomcwhar Retunded, leall: they {hould offend the tender Membrane belonging to the Dmpanum. in this pillage is lodged a Yellow, thick vifcide Recreinent, called Ceru. mill, from the likencfs of Wax, and the pailhge AIM/Ire, from a Bee-hive,as it is conceived. In the clofe of the Auditory Cavity is found the Membrane of the 73/m- The Meta: panum. el- Wefllingim- calleth it an Expanlion ofthe (Periofleum 5 And Caflérz‘m' iiypilihim, Flaszinm affirmcth it to take its rife from the Pericmm'um, which be pro- l'T' "I'M" veth by Autopfy, as having fcen in Infants, the Membrane of the Ijlmpammz hanging out of the Auditory paffage; and the 0: Squat/Imofnm continued, and falined to the 'Perirmnium. This Membrane is molt dry and thin, refembling a Cobweb in great fine- "camp nefs, and is very fmooth both without, and in its upper and lower Surface, W010"? and tranfparent like a looking-Glafs, and is not tied, only according to its cm mm, Circumference (except in the upper Region where it is fomewhar Ioofe) to the Ammlws OflEM, but is alfo baited crols-Ways toward the Center with a nervous Cord, or Ligament annexed to it. This Membrane is a fine contexture, made up of very fmall nervous Fin Tbcdc‘fgrgl‘ ilaments, coming from the auditory Nerves, giving it a molt exquifite Sen- $3.125: anon. Sometime the lempzmum is invef'ted with a tingle, and other times with a double Membrane, and is rarely incrufted with an excrementitious lentous Matter, which occafroneth Deafnefs, or at leafl: dulnefs of Hearing In the upper Siam of the Auditory paffage, Nature hath curioufly inter; The w , Woven a thin Mufcle with the Coat of the Membrane, which is called Mu]; Murcicxorr'ii: Cit/m Extmmr + takingr its rife in a fine Expanfion, adorned with fmall car. ff;.,z,g,,,,, nous Fibrils, which running gradually lefs and lefs, are carried contiguous ‘0 the Membrane of the fimpamtm, with a [lender Tendon to the Mallem: That the Membrane of the Tympanum being drawn upward, and outward Y Khe contraction of the curious Mufcles might be rendred more tenfe in its "PPer Region, to preferve the found more entire, and tranfinir. it to the in» Ward Recetfcs of the Ear, the Labarintbm‘ and Coiled. Auricle upon this account contributes much to the dil'tinétnefs and qUiCkn‘fsf o D The inward Ear, being the principal Organ of Hearing, is feared in the Them-m F H The |