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Show "tan". Book I ll . C HAP. 0f the manner of Scrfzrtz'on. [055 I; mitiesdifpenle Blood, confederated with Sumo: nutritim into the {paces of there Vellels, where it receiveth an alteration by Intei'lline Nlotion, as con» filling ol Saline Particles, made tip of drt'terent Figures and Magnitudes; and having dil‘proportioned Sides and unequal Angles, cannot To nearly clole, but they mull ol‘ necellity make little Interl‘tices, in which the dilagreeing Par- LVI. 0f the manner of Sen/arrow, Aving {hewn you a rough draught of the Membranes and Proceflts ol the Brain, I do now take the boldnefs to give you an account of the Offices of them, and how and where the Animal Liquor talteth i:s rife, and how it is propagated by continued Fibrils, through the whole Com. page of the Brain into the Nerves, and how Senfation is celebrated in the outward and inward Senfes. ticles do play up and down, and continue their motion, as they are acted with volatil and more grols parts, the volatil {‘till endeavouring to quit their {lation7 were they not not confined within the Walls ofthe more grols parts; and thereupon gain the advantage ofrefining themlelves, by the agile Con« vrrle olthe more lpirituous Particles 2 So that the Blood, accompanied With Sums milririm, being> compolEd of lpirituous and groller parts, is _rranl~mitted intothc lubltance ol‘ the Cortical Glands; and as they are made tip of difi‘trentNauu-es, have alto various Figures and Magnitudes, lpeaking difan The molt admirable Globe of the Brain is enwrapped within the Dam grceing lidcs‘and unequal Angles,which cannot fo nearly approach each other, and rPia Menynx, as with upper and lower Robes , which are made up of but they mull: necellarily leave loch {paces as are,fitted for the reception of Air, innumerable company of minute nervous Fibres, fo clolEly wrought, that inlpiretl with rcthereal Particles, which are firl't impelled through the Nollrils, into the chambers of the Brain, and thence tranlinitted through the palliiges they feem to make one entire fubflance, interwoven with variety of finall Tubes of Arteries and Veins, branched and twined about the Membranes, like Arbors overlhading this bright Orb, and importing and exporting Pur- ple Liquor into and from the Coats and Procedes of the Brain, to impaitLife and Heat to them. Thele line Vails encircling the Brain, are befet both above and below with numerous final] Glands7 which are colleétions of Vellels, rarely arched and lodged within each other, which are (0 many Colatories of the Blood, and melt) iiiter'liier'led with numerous Plexes of Veflcls,tliat they are lcarce dilcernible,excepr in [-Iydropick Brains,wherc they being rendred big with ferous Liquor, are more eafily dilcovered 3 the Glands being f0 many rare Compagcs of \r'etlels, in whole Inteil'tices the pure part of the 51mm Newt/(fl; being frvered from the more grols, diPtilleth into the extremities of the nervous Fi- of the (nrpur calla/um, into the liibf‘tance of the Cortical Glands, where the Purple Liquor, embodying with thenitrous parts of Air, and the lirlinc Par- ticles olthe Brain, is put into an intelline Motion, by rendring its grofs parts more volatil and fpirituous. And liu'rhcrmore , the elalticlt qualitv of Air doth open, and loofe the Compagc of the Blood ; whereupon the more delicate Particles ofthe Sumo" izmritim are lcparated from the Blood in the lubl'tance of the Cortical Glands, and agreeing in Figure and lWagnitude, \riththeOrifices of the nervous Fibrils, feared in the Glands, is thereupon tranlinitted into the Interllices olthem (and the Red parts ofthe Blood, be« ing proportioned to the {hape and file ofthe venal extremities) are conveyed into them. 2 And the Animal I iquor being received into the Origens ol the Fibrils, brils, lodged in the ambient parts of the Brain, and is thence carried through , its progrefs is more and more advanced by the motion of the Dam and 1m the feveral Procclles, curioufly feared Within each other, and are framed Met/yin, and the liulace ol~ the Brain, curled by the vibration of the Arteries, comprelling the outward parts ofthe Brain, and protruding the nervous Li- chiefly of nervous Filaments, by which they hold an entercourfe one with another, conveying Animal Liquor from one Procels to another, through the whole Compage of the Brain. Thule nervous l'ibrils interliaerli-d with capillary Arteries andVeins. are interlincd \\ ith a thin lolt q)dl‘t')I[/{yilid,fllld are originally formed out ol~ the mord \‘ilcid Particles of the Seminal l iquor, concreted into Filaments, to whole Interliices fonie genital lVlatrer being fornewhat indurated, doth flick, making the @arem'bym, adherent to the outlide of the nervous Fibrils, Whole ROOES feated near the Surface ofthe Brain, give the firft reception to the Animal Ll' quor, extracted out of the more delicate part of the 81mm nutricz'm, which was firfl impregnated with the volatil parts of Air, aflociated with Bloodin thelitbllance or. thel tings, which is thence carried into the Heart, and fifm' ward through the common,and thc altendent Trunk ofthe Aorfa,and Cal‘Odd‘3 Arteries (climbing up the tides of the Glam pilrrirtrria, making many Plexes belore it enrrethinto the Brain, to render its motion more gentle to pl‘é‘Vel-llall inundation ; whereupon the Blood is carried up fofrly into the Membranes and Surface of the Brain, encircled with cortical Glands, as {0 many {"131 byltems of‘various vellels, running one within another, in ICE and lcfs Arcb€§1 encompallingz each other, till they make an oval Figure, forthe molt PR", It not wholly compoled of nervous Fibrils, Veins and Arteries, whole 6&1"? mrtlfS qUOt, which receiveth more and more recruits by a conf'tant generation in the lubl‘tance oFthe Cortex, (wherein one part of the Animal luyce [till prel- leth another lorward, making its motion good) through whole Filaments it is filcccllively conveyed into the Fornix, and from thence into the Fibres of the Medullrt ably/grim, and Trunks of Nerves illuing out of it, to export ner~ Vous liquor to iinpart Senle, Motion, and the more excellent kind of non- rilhment to all parts 3 So that this molt delicate Liquor of the whole Animal SprBOdY) is made up of molt thin volatil Particles, as a€ted with Fibres, nervous the of Filaments the between {elf it iulinuareth lo and {lta loltly livelleth their tender Particles, producing a gentle Tenlion, partly callled by the fine elafiick parts of Air, lo well embodied with the Animal confiituent part of .Ll‘luol', that it may be well judged (asI conceive, a plumpcdut), and ‘f- ) Whereupon the Interflices of the tender Fibrils being‘ fomervhat fiifietred, (as infpired with Particles of Air, conlociated wrth Ammal Liquor) are rendred more or leis Tenle, and lo are receptive of greater 0‘ l91§Contra6tions, as they are acted more reniilsly or briskly from within, ythe diftates of the \Vill or Appetite, or from without by the milder or firoflg A pptllles made upon the outward Organs by fenfible obicé‘ts. . And thele tender Fibrils are capable of different poltures in the Brain, as in (01.3: "CI" rcCt‘ive any the leall change in their natural lituarion, and (0 0 r2 |