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Show . 992'1'0} z/Jc Tntho/ogy of t/Jt' Mcmlarmzrr oft/ac Wrath. BSleHT. Book III. ferr, is f0 highly coritr‘aéied, and as itwere convnlfed with acid Saline Par. ticlcs, muting a violation of the continurty of the Nervous filaments Compoling the Coats of the Brain ; So that wherefoeyer pain doth arife in the C H A P. XXXIV° Nervousparts, the Ratio formalis of it confil'teth in this, That the Animal Spirits being alfociated with Heterogenous Particles, are fo confounded, and aggrieved, that they make either great diftentions, or contraétrons in the 0f the Origen of the Brain. Nervous Fibrils, caufiug an unplcafant ienfation: And the reafon is, as [ conceive, becaufe fotne difproportioned Ob}eé'c doth highly diforder the Ani. mal Spirits, and fo boifieroufly infinuate it fclf into the Pores and lllterliices of the Fibrils, violently parting them one from another, thereby forceth the Animal Spirits intoadiforderly motion, producing a troublefome fenfarion, in which both the parts affeciccl and the eflénce of the Ceplmlalgia do confilt. Thrcaukwf As to the different caufes of it, I conceive them either to be Blood, or its iifaliimcme Albuminous Juice, by which it is fupported, or the Recrements, the Bilious and Serous parts of the Blood, or the Animal Liquor : Blood being impelled with a great torrent into the Carotides, lodged in the firm: and rPia Mmynx, is fometimes {topped after a manner by the Prraightnefs of the Veflels, which being fomewhat tumified, do comprefs the tender neighbouring Fibres, gi- ving them atroublefome fenfation, which is alfo frequently derived from the effervefcence of the Blood, caufed by immoderate exercife, drinking of Ptrong drinks, bathing, and the like. m'mm' The Chyle is carried with the Blood upon great paflion or immode. . . . izllflfl‘éii" rate exerctfe upon a full Iiomach, by the .Arteries terminati. ng into the pan) of m fubiiance of the Membranes of the Bram, and It being crude and indigefied, is not able to be received into the Coats of the Nervous Fibres, being after unfit vous Liquor for aflimilation, is fometimcs lodged in the interfiices of the Velfels, when: the Chyle being acted with undue Fermentation, rendreth the foft Nervous Filaments uneafie. ThcwatryrcAt other times the warty recrements of the Blood ( impregnated with ful3:11:23; phureous, and fometimes with iharp, faline or acid Particles) are tranfmitted Eiiritiiiiiis out of the Extremities of the Capillary Arteries into the Vacuities intercetrain. ding the Veifcls, highly difcompoiing the Nervour Fibres of the Membranes and producing an acute pain of the Head. And lafily, The Animal Liquor being not Well prepared in the (Max of the Brain, or elfe affected with other Recrements, is fo grofs, that it cannot freely pafs between the Nervous Fibres appertaining to the Coats of the Brain, in which the Nervous Liquor fomewhat Bagnaringfioth enlarge the lntetfiices of the Filaments beyond their natural extent,giving a trouble to thefe fenlitive parts, which are irritated to difcharge the Plenitude of this Nervous Liquor, lodged between the Filaments of thefc Fibres. Aving given you alight of the Cabinet, I will now prefent you with the Jewel, all cutin Wreaths and Maeanders 5 having {hewn' you the Shell, I will now give you the fubllzance 2 'And firli: the Origen of the Brain, the conception of which appeareth firi't as in an Egg without a Shell, and the Crifialline Seminal Liquor is enwrapped within a more tender Mem~ brane, which is the Cation 5 And afterward in the ipace of four days is cele-' hrated the fitii; period of producing the F«amt, wherein the Blood, Veins, 'fhc firll pe» riod prod": and Beating-point borrow their rough delineation, without the leaf): lhaddow Ctivc of a 1"; of the Head; In the next period appear fome glimmerings of it, a Conglo- The recent! hated part, made up of three Velicles, filled with a Limpid Liquor, and are period. the immediate Materizz fnbflram of the Brain, Cerebellum and Eye. They have their firfi formation out of that Genital tranfparent Matter, which though it feem to be Homogeneous, yet is compofed of different parts, more‘ plainly difcernible, when they arrive to greater maturity, and then the Cerebrum and Cerebellum may be diflinguilhed, and the fibrous and pulpy Particles,into Vefsels and Parembyma, which do integrate the Cerebmm and Cerebellar". The fibrous (as Iconceive) do borrow their firit production, after this manner. manner The Seminal Liquor being enobled with active principles, and infpired The how the Fi~ with fpirituous particles of Volatile Salt and Sulphur, do grow farther exal- bru oi the Brain are p261 ted by Fermentation, wherein the more thick and folid feparating from the duceda , .thinner and fetous parts, are made more tenacious and firm by the ambient heat of the "term, by which they are rendred fomewhat more indurate then 1M. the Pulpy, growing by degrees Fibrous, whereupon they are made capable of gentle tenfion, and relaxation, as they are more or lefs invigorated With Animal Spirits, no way communicable to the unaétive, flabby and pulpy fub. fiance of the Brain, formed out of the more ferous parts of the Seminal Lia quot, which is by degrees Coagulated into a white Pulp, a more friable fuba' fiance then that of the Nervous Fibres, and is turned from a thin Whey Lb quot into a kind of Coagulum, caufed by the gentle heat of the uterus", and the mixture of forneSaline Particles, which being added to the. Oily, cone crete it into a White Pulp, adhering to, and filling up the Interfhces of the Veflels and Fibres, which are thereby covered, and the Cerebrmiz and (are; slim: rendred equal. _ |