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spirit_n blood_n body_n heart_n 5,603 5 5.0093 4 false
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A66821 An enquiry into the causes of diseases in general and the disturbances of the humors in man's body wherein the nature of the blood, of the air and of a pestiliential constitution are briefly considered : together with some observations shewing wherein the venom of vipers, particularly that of the English adder does consist / by Stanford Wolsterstan. Wolsterstan, Stanford. 1692 (1692) Wing W3251; ESTC R25191 16,222 110

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let us next enquire how it does enter human Bodies And there are four ways by which it is commonly believed the Air may enter them Either First By its Mixing its self with what we eat and so is carried to the Stomach Or Secondly It is received by Inspiration into the Lungs and so is carried to the Heart Or. Thirdly By the Pores of the Body and from thence to the Mass of Blood Or Lastly In Inspiration to the Ventricles of the Brain The two first of which I think are only true As to the First I think it is undoubtedly true That the Air does or Aereal Particles do mix themselves with what we eat for whatever we eat must have numerous Pores or else we could never chew it with out Teeth nor digest it in our Stomach or separate Chyle from it and I believe the Air may sometimes enter these Pores however it does enter the Mouth and is pressed down the Oesophagus either by the Aliment or force of the Aereal Atoms naturally descending downward Secondly It is apparent both by dissection and inflation of the Lungs that the Air does enter from the Larnix and Bronchia into the Vesiculary Cells and there whether by Adhesion of Dissolution does deposite at least some part of this Aereal Salt where meeting with the occurring Humors is directly carried to the Heart and by its pungent Particles molesting and irritating the streight and oblique Fibres of the Heart does stir them up into a Systole or Contraction and so by streightning its Ventricles to drive forth the Blood contained in them into the Arteries And this I take to be the true Original of all Pulsation and first Motion of the Heart and Circulation of the Blood throughout the Body For when I observe the Motion of the Hearts of several Creatures exempt from their Bodies and exposed to the open Air I can never believe either the Influx of Animal Spirits much less the Ebullition Accension or Dilatation of the Heart to be the Cause of its Motion but rather the Effect of these pungent Particles pricking upon the Fibrous Parenchyma of the Heart in their natural descending Motion As to the other two ways of receiving Air viz. by the Pores of the Body when I consider the Nature of these Atoms pressing directly downward when I consider the great Quantity of Effluvia that are continually transpired by the Cuticulary Pores when I consider the Nature of those Pores and their action to be continued suitable to the utmost extremity of the Arteries from whence they originally are derived I cannot see how the Air can enter without either penetratione Corporum or an inversion of Natures constant Course à centro ad circumferentiam Corporis The Arguments that are brought to prove the Porosity of Animals by the taking in of Effluvia from without by the application of Oils and Plasters if rightly considered make nothing to this purpose to prove the entrance of this Aereal Salt by the Cuticulary Pores for setting aside a particular enquiry into the Nature of those Plasters their subtile active igneous violent cooling drying irritating stupifying obstructing and preternaturally disposing Particles the Cuticulary Pores are not placed for the due reception of this Salt nor have the points of this Salt a force upon them since they naturally descend perpendicularly downward Neither when I observe the difference between the Florid Aereal Coloured Blood returning from the Lungs and the Atropurpureal Blood contained in the Veins can I believe this Aereal Salt does enter by the Pores or is mixt with the Venal Blood when I see the Venal Blood both changed in colour and consistence from what I either find in the Lungs or Arteries And as to the last of these ways when the Authors acquaint us how the Particles of Air are parted assunder in Inspiration part of them ascending by the Mammillary Processes ad cerebri Vasa Ventriculos and part descending to the Pulmonary Vessels when they can I say explicate with any great probability how this is done for what end or use the Air thus impregnated with this Salt should come thither it will deserve further Consideration For Although the Mammillary Processes may be affected by the Points of this Salt and according to the various and different Modification of them so various and different smells may be conveyed unto the Brain Nay although the Particles of this Salt are very different as to their shape and bigness size and figure yet do I not see how nor for what end or use by these nervous Processes they should ever be conveyed neither can I see how these Nerves or even the Brain it self should escape a strong Vellication by them which being communicated by the Nerves might cause a Convulsive Motion in every Member in the Body CHAP. IV. NOw as I have owned but only two ways by which this Aereal Salt can be received into human Bodies so do I very much question whether any thing else is left in a healthy Air to joyn either with Chyle or Blood but this Aereal modified Salt only which of its self is able to produce these great and following Effects First This Salt as it is variously mixt or modified by the Aliment we take into our Mouths so different Tastes appear unto us and either descending or prest down by other Particles causes that disturbing Vellication on the inner Membrane of the Nerves that seem as it were placed there on purpose to communicate that Vellication to the Brain do occasion that Desire in us which we call Hunger and from hence the taking the fresh Air does make us hungry because we then receive this Aereal Salt both into our Lungs and Stomach But 't is not the Fibres of the upper Orifice alone but descending to the bottom of the Stomach with the Aliment or what we eat it has the same Operation on the other Fibres and moves them to eject out at the Pylorus and irritating all along on the Fibres of the Intestines is a great cause of and a considerable advantage to their Peristaltick Motion But though this Salt is so highly useful to the Motion of the Stomach yet the Stomachical Operations are not performed by it alone for I have observed near the Rugae of great Animals certain Papillae and a constant Juyce lodged in them which I believed to be an acid Lympha brought thither by invisible Lymphatick Vessels which we have great reason to believe do moisten the Fibrous Tunicles of the Ventricles although they are not perceptible to our sight I know I might have traced the generation of Animals and have shewn not only how the prima stamina vitae the Motion of the punctum saliens nay even the birth it self is owing to this Salt As likewise I might shew the Effects of different occurring Salts that meet together in the Duodenum But designing brevity I must hasten next to shew what great Effects this Nitrous Salt doth commonly produce upon our