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Three Lectures on the Organs of Respiration; Read at the Royal College of Physicians at London, A.D. MDCCXXXVII, Being the Gulstonian Lectures for Tha - Softcover
Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1740. Excerpt: ... LECTURE It OF THE USE of RESPIRATION in the Animal Oeconomy. OON after the Circulation of the Blood wasdiscovered, and the Certainty of it established beyond dispute-, it was readily allowed by almost every one, that the Health, Strength,. and Nourishment of the Body was owing to the Blood's being duly and constantly circulated thro' every Part of it; and that in whatever Way those Parts were nourished, the Nourishment itself was conveyed by. the Blood: and consequently, that the Blood must, in a healthy State of the Body, be ib constituted as to contain the Particles designed by Nature for Nutrition; and at the fame time to preserve itself in such a Begree of Fluidity, as would enable it to pass thro' every the minutest Vessel. This led the Way to an Enquiry, How this particular Constitution of the Blood was so duly kept up whilst it was tn the Body, which every one knew it would immediately lose upon being taken out of it? Tub The Lungs were soon fixed upon as the most likely of atl the Parts of the Body for performing this necessary Office; and not without very good Reason. For, besides that it followed from the Make of the Heart, and the Distribution of the Pulmonary Veins and Artery, that no Portion of Blood, how minute soever, could perform two Circulations, without passing thro' the Lungs; there was an obvious Difference in the Colour of the Blood after it had pass'd thro' the Lungs, from the Colour of it before: Whence it was reasonable to conclude, that something very material happened to it in that Viscus. The Difference of Colours in the Blood in the Veins and Arteries had been observed long before the Circulation was thought of; and it was accordingly divided into Venal, and Arterial Blood: and these were looked upon then as different Fluids, ...
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