Licence: Public Domain Mark
Credit: An essay of health and long life / By George Cheyne. Source: Wellcome Collection.
67/292 page 13
Licence: Public Domain Mark
Credit: An essay of health and long life / By George Cheyne. Source: Wellcome Collection.
![nuatcs itfelf into the patent Cavities of all animal Bodies s and the Infant, which never breathed before, afloon as it is expofed to this Element, has the little Bladders, whereof the Lungs confift, blown up into a perpendicular Erection on the Branches of the Wind-pipe s where¬ by the Obftruction, from the Preffure of thefe Veflcles (arifing from their being comprefled together, and lying upon one another) being in fome Meafure taken off, the mufcular Action of 'the right Ventricle of the Heart is able to force the Blood through the Lungs into the left Ventricle. But thefe little Bladders, being thus inflated by an elaflick Fluid, Bill prefs fo far upon, and grind the grofler Barticles of the Blood into more fi'zeable ones, that they may become fmall enough to circulate through the other capillary Vejflels of the Body. This ela¬ flick Air, prefling equally every Way round, by its Weight and Spring, fhuts clofe the Scales of the Scarf-skin of healthy and ftrong Perfons 3 fo that it denies all Entrance to the nitrous and watry Mixture, contained in it, and thus becomes a Kind of Cold Bath, to the ? and defends them from catching Cold: put in fickly, ftudious7 and fedentary ]?<](https://iiif.wellcomecollection.org/image/b30505161_0067.jp2/full/800%2C/0/default.jpg)
