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Show Book III. C H A P. XVIII. 0f Hearing. ing difcourfed the curious parts of the External and Internal Ear, H in reference to their admirable flruét ureg my defign at this time is to Treat 0 them as fubfervient to Hearing, which is a Senle as noble as ufeflll, flyled Senfu: 'Difciplime, by which others commu nicate to us, the fpeculative Principles of Sciences, and the more praéiical Precep ts of moral Philofophy, rendring us Wife, Skilful, and Virtuous. By this plealant Senle we carefs each other in civil Conve rle, impartin our Souls, by affecting our Ears With vocal Sounds ( varioufly modelled by £3351?" the Organs of Speech ) as lb many diH‘erent Charac ters, exprelling the ma- 5°""d" ny inward Conceptions, and Pallions of the Mind. 1 he Senle of Hearing is determined by Objects, either taken in a com- Thcdeftrimon notion of Sounds in general, or in a more particular and excellent kind prion of ofSounds, of {ignificant Words, which are the various modifications of 5mm humane Voice. As to the Sounds in general, they are loud or low, and greater or leis, as Themanner the furlaces of folid Bodies make firong or faint Collifions upon fluid. $333335 Whence it cometh that V'Vooll, Spunge, or the like look: and porous fub~ flames, receive Air into their Cavities, makin g gentle, or no reverberations of it, produaive of little or no found. For Sounds are percuflions of lolid upon fluid ; whence the parts of Air being fubtle, are ealily broken againfi a Bodies more compact fubllance, by reafon Fluids confill of many minute Particles, and as being verberated, receive various Configurations of Sounds, which being firll conveyed to the Auricle, and afierward to the inward Ear, make differ ent Appulfes upon the fenlory of Hearing. And the production of it may be celebrated (as I humbly contrive) after this manner: Sounds are the repercuflions of Air upon folid Bodies; whereupon Air being made of Fluid and liibtle Particles, when teverberated from its center of motio n, uickly diliufiath it {elf into an Orb, in fome fort relémbling the motio n oilWater, into which a heavy BOdY beinginieéted, it commenceth its motion in {mall Circle s, which more 311d more enlarge themfdves, till they arrive their utmoll : confines: And [his rt"Beth fomewhat to favour this Hypothefis, that Auditors feared in a great Towre, have Sounds, the configurations of moving Air, conveyed by a kind of oblique Rays to all parts of the Orb in which the Hearers are pla- cfd, clfe they were not capable of Hearing, which is made good by expeHence, by union all perfons hear Sounds in fuch an Orb, that hath not too Ermacircumference, elfe when the motion of Air cannot reach its Dimc nfi0‘15, itmaketh faint or no Appulfes upon the inward Organ of Hearing. Vote!) _ The "Obie and fignificant founds of words, made up of various Eleme nts iii/Lilli}? Olin" ° SPCCCh, are the exprelles of the Mind, and receive the Full, and more 23?"le rough draughts in the Larynx after this manner; The flrong impulfe of fixP'md Air, running in an even current through the finalityr Pipes of the b'a'd'i": and greater Chriuwi of the Afpera Arteria, till it arrive to the exG 11 tremity |