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Show 0f [/96 iii/him)" of Sen/man. , ._.___------> Book III. Book III. 0f t/Je manner of Scrflation. 1057 a fort they may be termed to be extended and relaxed, as the Interliices of nervous Filaments, are receptive of more or leis nervous Liquor, lmpre _ mated with rtfined Spirits, and {0 become contracted or remitted in fome greater or leis degree; VVhereupon I humbly conceive, that the tier. {es hath a retrograde motion 5 here the Scene is far different, and the Ma. chinCS play firlt trom Without, and are afterward carried to the inward Recents of the Brain, Firlt the motion is celebrated in the outward Senfes,wherein their Objects, making their fii'll‘. attempts and impreflions upon the Fibres of vous Tendrils, are never lb abfolutcly relaxed, but they partake of home kind their Senlbi'ies, are thence conveyed to the common Senfory by continued of Tenlion or other, unlefs where the vital flame is totally extinct, elfeic isimpoflible to apprehend, but ionic influx of the Animal Spirits may be com. inunicated to thefe nervous Fibrils. The molt common relaxation oithem is made in fleep,and then the outward fenlible Organs ceale from their Operations: And the Mufcles are dclpoiled in a great degree of their tonick Motion, confilling in a moderate Contraction, Nerves and Fibres, at lai‘tirill‘rted into the Corpus cal/ofum : as Iconceive, the equally imparted to the Antagonili Mufcles, which countermand each other, in givinga balance to their unequal and utmoltcontraétion; f0 that this tonick motion when we are awake,is a moderate tenfion of all the Fibrils,ari{inq fmm a more free influence of the Animal L iquor,flowing into the Interflices tifthcir Filaments, putting the Brain and outward Organs, into a difpofitiontoexert their Functions, which much ceafe in our repole, wherein the nervous Fibrils grow flaccide, and unable to celebrate the Feulitive and locomotive Operati- {car of the common fenfe, which judgeth the lirokes of fenfible Objects, oiven upon the Membranes of outward Organs. D Whereupon the Senfe abliractly conceived, either under the notion of ourward, or inward Senfe, forineth but an imperfect conception ofSenfation, the one allilling, and the other compleating the other; (0 that Senfe concretely confidcred, as involving the outward and inward Senfe, mull go hand in hand to accouipliflr Serifation, as they both hold a near entercourfe in their Semiotics, as being united one to the other by the mediation of Fibrils and Nerves. The outward Senfory gives the firllreception to the Appull'es offen{ible Objcéls, ( made upon their Fibres,) which are thence tranfmitted by the continuation of Nerves and Fibrils to the inward Senl'ory,where the common awake, is communicated a more liberal Influxe of nervous Juyce, running Scnfe determineth the perception, recommended to it from the outward Organs. And this Hypothefis I {hall endeavour briefly to illuflrate in feveral infianccs, drawn from the manner of Perception ( produced by the Organs of dil'tercnt outward Series ) confii'ting in the motion of the Objects, between the numerous Filaments foftly, and after a manner pulling them up and the contact of the Senfories of Smelling, Seeing, "Falling and Hearing with airy elaftick Particles, making l‘omewhat of itifl‘iiels in the tendetframes of the nervous Fibrils, giving them a promptitude to be tuned for the admirable operation of Senfation, which is made up of great variety of lienlitive As to the fenfe omeelling, the {teams exhaled From odoriferous Bodies, being aflociated with Air, are carried up into the Caverns ofthe Nofirils,where thefc thin eyfflzrz/ia, being Syl‘temes of many minute Bodies (received into the Seniory oi Smelling) are configured to the Pores of the inward Membrane of the Nollrils, compofed of many Fibres derived from the Fifth pair of Nerves, which are affected with {oft and pleafaiit Appulfes, when the minute fleamy Bodies agree in the file of their Angles, with that of the Pores of the netvousFibres; but when they are of different files, the difproportioned Bo- ons,produced from the free accels of Animal Liquor,denied to the Origens of the nervous Fibrils, feated in the Cortex of the Brain, to which, when we are powers, as in fome fort the principal Agents, attended with a great Apparanm of diverfe Senforics and Objects; as to the percipient Power, it is a branch ofthe fenfitive Soul, refiding in the more inward Recelies ofthc Brain, flyled the Common Fenfe, apprehending and judging the various motionsmade by fenfible Objects upon the outward Organs, and thence conveyed to the inward Seniory. Thus having given you a general notion of Senfation, I lliall now prefent you with a more particular accountof it and its Motion, by laying down the method, how it is infiruéted and direéled by the fuperior Faculties, and_the manner of Scnlitive perception, how it is made by the different Appullcs of fenfible ijeéts, upon the outward Organs and thence derived by Nerves and Fibrils to the common Settle. A The underflanding or counfelling Power of the Soul, propounding an 0b}eét under the notion of good or evil, the Will refufeth one as deltruétivea and clefieth the other as perfeétive, and thereupon giveth its Commands by its emillaries, the Animal Spirits, the more refined Particles of the Aninul Liquor, to invigoratte, firlt the Fibrils of the Brain, and then the Nerves if1mng out ofthem, and afterward difpenfed into the Mulcles, to give by their various Contratftions the different motions of the Limbs, to proficutc théit 000d» Firft propouuded by the dictates of the underfianding, and after ordEer by the imperate aéts ofthe Will, thereby giving her Commands to the "1fo lot Powers, the ii'alcible, concupilcible, and locomotive Faculties. And this method of operation of the rational Powers, upon the fenlitive AppCtifC, is moved from within, outward, by Firfi impregnating with Fpirituous [l' quor the Fibrils 0f the Brain, and then the Trunks of Nerves are embodied With Fibrils fptouting out of the Brain, and after propagated into the Mulclc'S of the Body : But the method of Senfation, derived [ion] the outward 39;" es dies of lieams, grate upon the nervous Pores, and then the Senlation proa vcth ungrateful, {0 that the various Motions of Air impregnated wrth odoril'erous Strains, are firit entertained into the inward Membrane of the Nofirils, and thence tranlinirted by Fibres to the Trunk of Nerves, fprouting out ofthe Medulla oblongata, and are thence conveyed by Fibrils, continued through the Fornix into the Corpur mIZofum,the feat of the common Senfeppprehendmg the Perception of the outward Organs, to be pleafant or unpleafant. . . The lenie of Seeing runneth parallel with other Senfes, in that its object being in motion, maketh application to the outward Senfory, al'f‘eéting it with gentle flrokes , imparted by communion of Veffels to the inWaid Serifory; the aét of Seeing being the Perception of Appulfes, made on the nervous parts of the outward Organ; and the more excellent part of feeing, being the inward apprehenfion, determining AppullE-s fii‘lt made 5") and then communicated from the external to the inWard Senfory, therein co'ml'leating the act of Senfation, which I {hall endeavour more fully to illulirate. The Rays of Light, the Object 0f Vilion, being a contexture of molt innumerable minute Bodies, confilt of infinite lucrde Particles, .flream- {fig out of Celel‘tial Bodies through every Phyfical point of the Hemifphxre, 1" With the lucid Particles impel each other, by an incxpreflible fwrftnefi 0 Motion, through the molt numerous minute pores of the Air, continued m Various Opaque Bodies, into which the Rays of Light being not able ‘0 pe- Renate, do (per: up and down in diEcrent politions of outward Surfaces: forming |