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Show "WM..- "' 4 0f Hearing. Book Ill: trcrniry and head of it, where the confined Breath groweth Clil'ltd, as receior lefs vibrations againli; that of the Cztl‘trlagcs, called Ar)", \ino3 greater \ the M}: mlz' 15),," wit/(let, rcndred more or lefs ltifl'by the Contraétions of t1})‘lrf710it[€i, Aryza noidei, Cricoarytmwidei, Laramie: (7 Pofiz‘cr‘, the (Slaufors and Apertors of the Rimula, by whofc various motions or (contraction and Aperture (as by f0 many ltOps ) are found many drfcrimrnarronsor rounds, the rudiment of Letters, and Words, made of modelled Breath, ltrli vocalized in the Larynx, and being thence tranfmitted to the Mouth, receiveth repeated repercullions againl't the {ides ofthe arched l'nlate, which gireth to Book I ll . 0f Hearing. Linc, createth a peculiar (Radius: f0 that the whole Air, encircled within the Membranes of the Drum, is moved in feveral lines, and is as it were a Cylindfrs made up of innumerable contiguous Rays; whence it may be inferred,That the Motion of the inclofed Air,(repelled from the higher to the lower Membrane of the Drum) feemeth to refemble that of the innate Air lodged within the upper Tnnicle of the Tympamrm, and the lower of (ht: (951m, of which the inward is beaten back to the Coclea, wherein it amt}, drawing by various motions the Membrane, inwardly and ontwardlylatthc eth the auditory Nerve. The Compage of the innate Air (as I conjeélure) is made lip of many Radiuli, moving in a Pyramidal Figure, Whofe Bafe is near the Umpammz and its point ( wherein the fine Rays are united ) is placed about the Few: fl" Owlir, through which they pafs into the Labarimbur, and from thence they are tranfmitted through the Fem/ha rotunda, in order to make Appulfes upon the fpiral Flexures or the Coclea, clothed with a fine nervous Tunicle, the proper Serrfory of Hearing. Some are of an Opinion that the (Radii of the external Air, do not pro: fame time, which rendreth it Tenfe, and in a fit capacity to receive the leveral pagate new ones in the innate Air, but the minute configured parts of the the found of the Voice new accellions of increalc and fweetnels, and ten. dreth it Articulate ( as its great accomplilhment) by the Organs ofSpet-cli, making the more perfect Configuration of the Voice, the molt choice model of expired Air, which is thence conveyed by a quick undulating rnorion, through the diverfe Maeanders of the Auricle, and lpiral auditory prruge, to the Tympamtm of the Ear, which being well braced by the Mufclt-s of the Ear, Appulfes of articulate Sounds (upon the Surface of the Membrane) which outward Air, do infinuate themfelves through the Pores of the Mems make the fame Configurations of the voice upon the Contiguous partsof brane belonging to the Tynpanum, and do configure the contiguous Par- innate Air, which moving after a Pyramidal Figure (whole Bafe is toward the ticles of the innate Air, and fo one after another, till at lafi the moved 'Tympmmm, and the Cone toward the Femflra Orr/411's) through the contracted model of innate Air, is tranlmitted into the Labdrinrbur, and from thence through the Femflra rotunda, into the fpiral Meant: of the Coda-tr, invelied with fine Membranes, interwoven with various Fibrils of Nerves; fo that Particles do affect the auditory Nerves, befetting the Tunicle of the Carla. And this conjecture they endeavour to explain by the trajeéiion of Rays Appulfes being made of the innate configured Air , upon the thin Tuniclc covering the Coclea, the fenfation of Hearing is immediately and ultimately exerted : The manner of it may fcem with fome probability to be exprelled of Light through Glafs; which infiance lEemeth not: to be fatisfactoty, becaulc the Rays of Light, are much more fubtle then thofe of ambient Air, whofe Particles, if they could penetrate the Pores of the Membrane of the Tympanum, by the fame rcalbn the minute Bodies ofthe more pure and thin innate Air, would foon quit their confinement, and tranfpireinto, andem- by Sounds, which briskly recoiling from folid Bodies, do move the Air body with the contiguous outward Air : whereupon the inward ReceITes of with fo much agility, that in a moment its numerousfubtle configured parts do enter into the Auditory pallage, and immediately make many Appulfes, Flr'llt, upon the feveral parts of the outward furfacc of the Membrane, relalating to the Umpuuum. And every particle of the outward modelled Air, maketh the like imprellion upon the fubtle Atomes of the innate Air, whofe molt near parts, contiguous to the infide of the Membrane of the Tympammz, are firll comprel‘led (after the fame Configurations of the outward Air) and afterward the Eat would be left deliitute of innate Air, which is generally believed to be the immediate medium 0.f Hearing. But farther, fay they, That Sonnds other parts of innate Air, are fucceliively protruded in order one after ano~ {being very many linall bodies of Air diverfly moulded, and by reafon of their fevcral Figures, various kinds of Sounds are formed 3 therefore how can the auditory Nerves be affected, to receive the impreflions of various Figures of Air moving upon them, if the modelled Particles ofexternal Air, do not permeate the Tunicle of the Tympanum: From this it might be argun td as well, that the coat of the Tympamcm is the Organ of Hearing, difcerning‘rhe variety of Sounds, as the diverfly modified Particles of Air do after ther, till the molt inward Atomes do make appulfes upon the Membrane ‘ drfiererit manners al'fec't the Coat of the Tympmmm. of the Caclea, befet with nervous Fibrils; (0 that the divcrfi: parts ofthe Coat ceive it more probable, that the laid Membrane receiveth feveral Appullés belonging to the flmpnmm, are moved with the feveral firokes of exter‘ nal configured Air ( contained Within the Labarintbur, and Cat/ea) giving vibrations upon the tendrels of Nerves, interwoven with membranous Fi‘ laments, in the Tunicle of the Caclea. The Appulfes made of divers motions of modelled external Air, upon the Membrane of the Tympamrm above, and ofthe innate Air, upon the TUHl' from the difli‘re'lit‘cOnfigllI‘Cd Particles of Air, contiguous to the outward furface of the Membrane of the Empannm, which is thereupon diverlly com But I humbly con- matted and moved, and then this Contraétion and Motion being imprinted upon the inward liirface of the faid Membrane, immediately forceth a retrograde Motion in the innate Air, and conformeth it into Rays ( accord- mg to the firli Model of the outward Air) making feveral {‘trokes upon Head and Bottom being covered with a Skin of Velome; and the upper one the auditory nervous Fibrils, branched through the Membrane enwrapping the Cor/ca, from "whence it may be deduced with good reafon, that being (truck, the Air inclolEd between the Two coverings is beaten backward. giving a forcible vibration upon the oppofite Membrane, which is plainly evident from the motion of the Cords begirting it: And every Particle of the the Membrane of the Urn/palm»: cannot challenge to it {elf the a'ttribure of being the Senfory of Heating: And though the Tunicle of the Tympammz be not Wholly deflitute of Nerves ( which are common to all Mem- ripper Membrane of the Drum, receiving the flroke of the flziclt, reP‘l' i lerh every part of the confined Air, which moving according to a prop" 0 israthcr an ir'rfltrumcnt of Touching th'en Hearing. cle of the Cooled below,may be illul'trated by a Well-braced Drum, whofc i Line . ranes) yet it is not furnilhed with branches of the auditory Nerves, and . 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