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heart_n artery_n great_a left_a 3,533 5 9.5157 4 true
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A35721 Hydrologia philosophica, or, An account of Ilmington waters in Warwick-shire with directions for the drinking of the same : together with some experimental observations touching the original of compound bodies / by Sam. Derham ... Derham, Samuel, 1655-1689. 1685 (1685) Wing D1098; ESTC R13324 80,234 190

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receiveth another Ferment by the mixture of the Bilis and Succus Pancreaticus by which the thinner Parts are separated from the thicker and received or rather squeezed by the Peristaltick Motion into the Orifices of the Lacteal Vessels but the thicker and gross ejected by Stool This Precipitation and Separation Sylvius compareth to a Solution of Vitriol in fair Water which by the mixture of Salt of Tartar presently leteth its Sulphureous and dreggy Parts subside I shall not then like some take the perfecting of Chylification in the Intestines to be a second Digestion distinct from the former but rather a Perfection and Depuration of the concocted Aliment or Chyle Neither shall I make that little alteration or rather preparation to Sanguification which the Chyle by mixture of the Lympha receiveth from the Mesenterical Glandules and Ductus Thoracicus before its ingress into the jugular Veins to be a third Digestion and distinct from Chylification and Sanguification but as a Preparative to the Latter with a convenient Vehicle The acrimonious Particles of the Saliva swallowed and the Acid Stomachical Ferment and the Reliques of Aliment of former Digestions sticking to the Coats of the Stomack and brought to Acidity finding no Aliment to prey upon do molest and irritate the Stomack which molestation being imprest upon the Nerves of the Sixt or according to Dr. Willis the Eighth Pair and by these communicated to the Brain doth excite a desire of Eating or Hungering after Meat to imbibe the ferment gnawing on the Stomack As for the Colour of the Chyle or why Mutton Beef Bread Herbs c. eaten together should be turned into a white Creamy Substance Or why the Aliment should not retain its pristine Colour I conceive to be as thus The Saline and Sulphureous Particles with which our usual Aliment doth abound being well dissolved and mixed together do by the Acid Ferment acquire a white Colour Even as in making of Lac Sulphuris the Flos Sulphuris and Salt of Tartar by boyling together turn the Water to a dark Red but by instillation of Vinegar turneth to a white So every Liquid impregnated with a Sulphur and an Alkalizate Salt but more especially when the Salt is volatile or with a Salt well implexed in and dissolved with the Sulphur by addition of an acid Liquor becometh white as may be seen in the making of Resinous Extracts of Vegetables or by mixing spirit of Benjamin spirit of Harts-horn of Soot or such like spirits abounding with volatile Salt with an acid Liquor or fair Water The Chyle having passed the Stomach into the Intestines the purer part is received into the Lacteal vessels and perhaps some of the more Spirituous parts into the Mesenterical veins by reason of the sudden refection after eating and drinking by those that are through labour and travel wearied which convey it to the Mesenterical or Asellius his Pancreas and from thence is conveyed by the Ductus Thoracicus into the Subclavian vein where by the way it is mixed with the Lympha brought by the Lympheducts which is not as an useless Liquor but serveth for a vehicle to the Chyle and by its saline Particles doth prepare it for Sanguification The Chyle having once entered the subclavian vein is mixed with the recurrent venal blood and by the vena cava is conveyed to the Heart where is chiefly made the second Digestion or Sanguification But first entering the right ventricle of the Heart from thence it passeth through the Arteria Pulmonaris called also vena Arteriosa into the Lungs From whence it is reduced to the left ventricle of the Heart by the vena Pulmonaris or Arteria venosa in the Diastole or laxation of the Heart it enters the left Ventricle but by its Contraction or Systole is sent forth into the Aorta and by It is carried to the whole body But the residue after Nutrition is reduced by the veins to the right ventricle of the Heart from whence again it begineth its Circulation This is the Natural course in adult persons but in the foetus or Embryo it is something different An Embryo having not attained to Respiration nor to a perfection of its Lungs the Blood cannot Circulate as in adult Animals Wherefore Nature hath provided two vessels in a foetus that afterward grow obsolete and useless viz. the foramen ovale and canalis Arteriosus The Foramen Ovale is placed under the right Auricle of the Heart and uniteth the vena cava to the vena Pulmonaria The Use of it is to carry the Blood that doth not enter the Right ventricle into the vena Pulmonaria that it may enter the left ventricle of the Heart The Canalis Arteriosus uniteth Arteria Pulmonaris to the great Aorta whose Use is to convey the blood that hath passed through the Right ventricle and is driven by the Systole into the great Artery so that it slideth by the left ventricle By which we may observe That the blood in its Circulation always entereth the Heart but in an Embryo passeth through only one ventricle I said before that Sanguification is chiefly performed in the Heart for it may with good reason be questioned Whether the Effervescence of the blood the Accension or flamma vitalis as Dr. Willis would have it be from the Heart or rather from the Fermentation of its contrary Principles and according to others Sanguis sanguificat Dr. Lower cap. 2. de corde absolutely denieth any Ferment to be placed in the Heart He telleth us The Heart oweth its Heat to the Blood and not the Blood to the Heart yea that the Blood by its heat doth actuate and enliven our bodies and that Nature hath not bestowed more heat upon the heart than upon other Muscles but it hath a more brisk and lively heat than other parts of the body because it is in a continual motion and so much surrounded with adjacent parts Neither doth its Action differ from the Action of other Muscles And cap. 5. he telleth us The Chyle is turned into blood by the vital spirit and other of its active Principles which from the first Mixture with Chyle do work upon it until it be refined until the saline sulphureous and spirituous Particles be set at liberty from the feculent and associated to them of the Blood Dr. Harvey that exquisite Searcher into the Generation of Animals speaking of the Order of Generation of the Parts of the Body saith Ab initio Punctum rubrum saliens vesicula pulsans fibraeque inde deductae sanguinem in se complectentes c. Exercit. 50. That a red beating Spot or Bladder with Fibres thence deduced containing Blood do first of all appear And by exact observation doth conclude In the generation of Animals blood is the first thing that is made And as Pulsation doth begin in it and from it so at the last moment of life doth it end in the Blood Quantum ex accuratâ inspectione discernere licuit ●it Sanguis antequam punctum