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Elements of Self-Knowledge
Angebote / Angebote:
Excerpt from Elements of Self-Knowledge: Intended to Lead Youth Into an Early Acquaintance With the Nature of Man, by an Anatomical Display of the Human Frame
I think it nemfihry here to fiate what to fame may appear an omifiion. When Hunter wrote, the office of the lungs was unknown, as we thall fee in page 14 of this Winnie, but the late improvements in che mifiry have developed the nature and necef fity of refpiratioln. In the lungs the blood comes into contadi with atmofpheric air, and work many chemical alterations in it. It is in the lungsa that the dark blood, throwing orf attenuated char coal, forms with the vital 'air of the atmof phere, fired air. It is in the lungs that the purple blood parts with its hydrogen, which uniting with the vital air, forms the humid vapour that ifiiies from the mouth. And it is in the lungs that the purple blood, having thrown orf hydrogen and charcoal, imbibe? The vital air, which changes its co lour to a brilliant red, rendering it the fpur to the aetion of the heart and arteries, the.
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