An essay of health and long life / By George Cheyne.

  • George Cheyne
Date:
1725
Catalogue details

Licence: Public Domain Mark

Credit: An essay of health and long life / By George Cheyne. Source: Wellcome Collection.

    63/302 (page 13)
    nuatcs itfelf into the patent Cavities of all animal Bodies; and the Infant, which never breathed before, a (Vo on as it is expofed to this Element, has the little Bladders, whereof the Lungs confifl, blown up into a perpendicular Ere&ion on the Branches ot the Wine-pipe 3 where¬ by the Obftruftion, from the Preflure of the Vefcles (arifing from their being comprefled together, and lying upon one another) being in fome Meafurc 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 elafick Fluid, Bill prefs fo far upon, and grind the proffer Barticles of the Blood into more fzeable ones, that they may become fmall enough to circulate through the other capillary Vejfels of the Body. This ela- ftick Air, prefling equally every Way round, by its Weight and Spring, fliuts 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 them, and defends them from catching Cold: But infckly, fludious, and fedentary Peo¬ ple*