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i od is a viri uou' and animaled humor. The blood is tho repository of est the prior or purer humors in the body, and the seminary of est the posterior Or grOSSer; Wheres ore it contains the prior in actuality, and the posterior in poteticy. The animal spirit descends hom the very essenee and substance of the foui; the purer or middie bl od Dom thoanimal spirit; and tho rod blood Dom the purer. It is only bythis succession and derivation that the foui can be present tothe severat paris of the body; for to be present With ait, it mustbe involved in ali in the above order. The intimate principiethen that lies in tho dopth of the red blood, is the Very esseΠce of the solvi, Whicli in ruting and determining the blood, rules iso nud determines ali that depenus upon the blood. Unlessilio blood containod Within it the prior animal essen ces, themembers of the prior sphere could never provide sor those of the posterior, nor the posterior be related to the prior, nor Would there be any mutuat respecti VeneSS, dependenee, harmonDOr reni correspondonee. There re the blood is spirituous and
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Τhu blood partaes of the foui, inasmuch as it involves thepurer blood; this, the animal spirit; and this again, the prime essenee Or the foui. It partakes of the bo at the fame time, inasmuch as it contains earthy, ineri and saline particles, Whichgive it gravity, color, a comparatia ely hard consistence, audother attributes, Whicli are the qualities of mere body, and attach to materiat things : besides Whicli, the blood-globules areos a circular form, and in this Way also are bodily. The quantityos space Whicli the solvi and the body occupy respectively in theblood globule, may also be calculated, by comparing the internalspace filled by the litile saline cube, and the angulis interstices containing the smaller trigons, With the space of the globules; though it is to be observed that there are most pure elements of a similar but purer nature in these Very globules, to givetheir frame-Work strength, to temper their activi ty, and to fixtheir volatilily.
through those of the middie sphere, and be With them, and in them. Τhus sis the blood is the sol s vicegerent in the ultimates of the kingdom, so it may be termed the bodily foui, and subsidiary lieuienant force; particularly in those Subjecis that alloW themselves to be governed by the body, and nos by the spirit; such for example as brute animais, und their likenesses in human society. In these, instead of the foui
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Τhe soles is the only vital essenue, or the Only essen ce in Which life abidos; nil other things ome their possession os life to the foui. Such is the casu With the blood, in tho inmost os whicli tho solii dWolis, With life in iis train. The blood, hoWever, is but the generat Or common mansion os the sOul, and is nos distinctly determined by fibros, and therelare iis life is obscure, destitute os sense and ali intellectual faculty. Essentiat determination, or soriti, is What causes us to live distincti vely and individually. Τhus Dom the form We may inserthe peculiar li se, and lience also the peculiar life of the blood, Which becomes a litile more distinct in heing determined by the arteries and Veius; although it never reaches the potnt Whichmay be called sensual lide.
ordor and de WEEδ. Wo may judge by the visibie and the ultimate of the invisibio and the prior, or by the compound of the simple. Com-pOundS can have nothing truly essenties in them but the sirstessenee. The nature of the red blood is exposed to sight, butnot the nature of the purer blood; stili tess, of the animal Spirit. We may hoWever infer Dom the former the peculiaresSenues of the two latior. Τhis Way of exploring the invisibi eand occuli paris Os nature, constitutes the analytic method; but it is quite requisite to possess the experieuce of the SenSeS,as Weli as guid ing sciences, or sciences to deliver the laws andorder by Whicli nature procelds, or by Which her solioWers are
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to proceod. Τhis ordor appears to dictate, that is thoro tiro Salino-urinous elements in the red blood, there ought to busimilar, but more pure, simple and per et elements in thewhi te blood, although no eye-Sight, hoWeVer Leen, can possibiydiscover them; and again, that there ought to be similar elemenis, but most simple and most perfeci, in the animal spirit. OtherWise there Would be no derivation Os One essen ce fromthe Other, no distinction os one froni the other. Τhe degreesos persection, lioWever, in these and similar entities cannot beexplored Without a doctrine of forins. In the mentitime, si omWhat we have stated it is evident, hoW greatly the experience of the senses contributes to the discovery of nature's Secreis, and that Without it We cannot rise to a linowledge of the paris os the higher and simpler SphereS.
blood not so properly, because it is not red but White; again, tho purest blood is the animal spirit. The soles presides overthese severat fluids; the foui, Whicli is not blood, but the sirst, inmost, highest, simplest and most perseet essen ce of theblood, and the lise of all. The red blood derives iis principalessen ce Dom the minuter globules Whicli lie in it, and there rea volume os sueti globules cannot fuit to bu designated blo d. The fame applies to the animal spiriis, Whicli are involved in the purer blood. Ait these varieties then nre denominaten bloods, Whicli is also usual in the Holy Scripture. The substantini und essentiat principie remaliis the fame, While thoparticulars that vary the notion are mere accidents. Is theblood is not denominaten Dom iis redueSS, graVity and crassitudo, but froin iis inner nature, then both the one and theothor of these fluids is biood; not so is it be denominated Domihu be re mentioned accidenis. In themselves these blood scire indoed most distinui; for they are reatly and actualty dis-
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together in the red humor; hunce, for distinction's Sahe, theyrequire to be signi sed by disserent names: and is in no Otheryet alWays by varying predicates of persection. Thus Wemay say that the animal spirit is the first blood, tho highest, inmost, Simplest, purest, most perfeci; that the white or middie bl ood is prior to a d higher than the red, and likeWise more inWarii, Simple, pure, and perfeci: but that tho red blood is the last, loWest, Outermost, the compound blood, the relativelygrOSS and imperfeci, the ultimate, properly the blood. Τhe Same remariis apply to the vesseis of the triple blood; for thu
bule is persectly spherical, and rotis in circles in the vesseis; and moreOver it includes puriteles of an angular form. Thus tho sori os the globules of the red blood is the ultimate and penultimate forni. But the form of the globule of the purerblood is not circular or spherical, but spirat; as indeed may be inferred Dom the circumstance of these globules being oVal, and thuresore designated' as plano-ovat; sor the form of a spirulsuxion Os paris eligenders the externat figure or form of an ovat. Such is the case also With the cortices glands, Whicli areat Once spirat and vortical forms. Diat the form os the globules of the purest blood is the nexi higher forin, or the Vortices. For as the bloods themselves become simpler, so their forins
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in the organic body are thus at once separated and unded; andeach blood does iis own Work, and rules iis oWn organism. Onthese conditions, and DO Other, cun the SOul forin and goVernthe body in a just ordor and succession, and preside OVer RΠd command it in the sphere of the vertest singulars, und universallynt the sume time. The more nearly conjOined theu these reigΠ-ing humors are in the red blood, and the more exquisitely discriminuted hom each Other, the more persect is the organiSm,und the more obedient ali things are to the decisions of the SOul. But as soon as ever the distinction and the union arelosi and consounded, the sensation and action Os the body be- come comparatively indistinet, indeterminate, tinfeli and imperseel. For the Ove reasons, at every round of the circulationthe red blood is resolven into the purer, and this, into the animal spirit; and then the red blood is again composed of the tWoluiter. Thus the circle os life is carried On.
But this proposition need only be stated here. In a Subsequent chapter We shali treat Of the action of the muscies.
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35 It may be observed, however, that Without the discriminationos the humors Whicli are the agenis, there could be no reciprocalaction, i.e. no Simultaneous and Successive acti On and reaction.
The nature os any compound is according to the nature Ofthat whicli exisis substantialty Within it; sor putting accidenis out of strat, the compound derives iis nature Dom that of the simples Whicli it comprehends. The red blood indoed may bedefled With heterogeneous particles; but as the larger portionos it is resolved and recompounded during every round of the circulation, and iis hard, or antiquaten and indissolubie paris e rejected toWards the livor and the gail bladder, so it is puri- sed successively. There re so long as the animal spirit and the purer blood remuin in their integrity, so long can any morbidstate of the red blood, or of the body, be corrected, in Whicli casenature is suid to operate the cure. In this Way the One 1lowsinto and influences the Other, und the prior or innex Sphere repairs Whatever may have fullen into dilapidation in the posterior
purer blos HW0 shewed in tho Treati se on the Spiriis, that the animal spirit undergoes infinite changes os state. This mutability of the spiriis, this their intrinsic nature, ali passes by derivationinto the state and nature of the purer blood, and nil the mutability and nature of the lalter passes again into the state and nature of the red blood; for the state of the one depends by continuous influx upon that Of the other. Alany peculiar muta-D 2
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particles Whicli are tinen into the globule to give it cohereiicennii composition. The mutations in the accidenis, or in thesiluation nud connexion Os the genuine and essentiat paris, depend in generat iapon these accessories, and their quality audquantity: hence We have the blood relatively sost, hard, hos, coid, red, pale, Or green; in a Word, hence the circumstance that the blood is spurious, legitimate, or various. ΤhiS SheWShow mutability increases in compounds, and With it, inconstancyniid imperfection os various kinos. Each change of state in the simpler puris Whicli lie Within the Others, induces a change in the compound, though not vice versa; for there are proper
That tho changes os state in the blood ure infinite, Or exceedali enumeration, may be shewn analyticatly and by calculation.
It was indicatust a bove that the soles and animal spirit os notWo individustis are ever absolutely similar or equat in their Wholenature and accidenis: it follows that the fame remain is applicabie also to the blood. For the naturo of the animal spiritdeterminos that of the purer blood; and this, that of the grosseror red blood. And the latior may be varied in infinite Waysbosides; sor the blood of one subject is soster or harder thau that of another; it is heavier or lighter, hoster Or colder, sale redder, Or blacker. The globules also disser in sige in disserent persons. Instenil of the saline cube Or Octohedron, the place
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of the fulcrum may be supplied by a dodecahedron, n heXagon, Ox a pentagon; Whicli Will give rise to a greater or leSSer quantity of the purer globules, and to a variation in forin. Instendof the urinous salts or subile and volatile trigons, acidS Ormore fixed salts may bo inserted in the angular interstices, Orelements of some other description, Whicli Will at Once alter thestate of the globule. The latior may be surrounded With other fragments and floreting pieces of the most diverse Linds; unil also With chyle and serum equalty diverse; not to mention a numberos other varieties Whicli it Would bo tedious to particula rige. The existence of these diversities in the different orders of blood, is proved by the common laW, that there are as many different hodies, disserent actions, disserent dispositions, different mindes, inclinations and temperamenis, as there are heads and subjecis; Whicli inducest me to bellove, that not only is the blood of ono individual not absolutoly similar to that of another, but that itis never qui te the fame in the fame subject at any tWo momenis; for the mind, and the animus Whicli dependes upon the sinte Osthe animal spirit8, are perpetuatly varying; and I further belleve, that no tWo globules of blood are ever absolutely similar. Ineed not noW mention the blood of land animais, birds, or sishes, in Whicli the globules are disserently formeli, Some being ovat, surrounded With a thin sursace or crust, White, naturalty colit,
The humors of the body are the folloWing: chyle, milli, bl00d, Serum, lymph, animal spirit, saliva, the mucus of themouth, bile-the liquor of the pancreas, Stomach, inteStines, insophagus, brain, eyes, thoraX, pericardium, abdomen, tunica Vaginalis testis,-semen, the liquid of the prostate gland8, themucus of the nose, tonsiis, jOinis, urethra, uteruS, Vagina, and Fallopiari iubes, the humor of the ova, and that in Which the
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number Os others requiring to bo specificatly discriminatod. It is clear Dom the very structure of the glands, in Whicli these humorsare prepared and elaborated for every use, that the red blood gives birili to nearly ali of them. Indeed the glandes are composed of nothing but vesseis and fibres. The red blood and the purer enter them With their vesseis, and the spirit, With iis fibres; and then the humor issues forti, reconstituted Dom theglands. This is conspicuousty seen in the milli, semen, and saliva. In each of iis spherules the blood comprehends mere principies and elemenis; consequently in potency aud virtve it possesses ali that is producibie in the World by simple principies, elements and substances; in One Word, nil that is possibio. The globulo Whicli holds Within it these elements and determined unities, and this, so subordinated and coordinated, thalit can be rendily resolven in to them One by one, cannot stat toprocreate ali species of humors in the universe; and this it actualty does, becauso it is resolved or disintegraten during eve round of the circulation. Heuce in the nature of things no compotand entity can possibly be more perfeci than the blood. From this vlew of the bodily constitution of the blood, it follows that seach blood-globule is a Liud of microcosm, Or contains in aut ali the series Whicli preceded ii, and in poten Hl WhichfolloW it; in potency theres ore a Whole human race, sor the seedarises Dom the bicod.