8. The quantity of the blood that flows to the lungs to be acted upon by the air at one action of the heart is two ounces ([425]).
9. This quantity of blood is acted upon by the air in the five-sixth parts of one second of time (429.3).
10. One circuit of the blood is performed in 160 seconds of time. Three circuits are performed every eight minutes; 540 circuits are performed in the twenty-four hours ([453]).
11. The quantity of blood in the whole body of the human adult is 24 pounds avoirdupois, or 20 pints imperial measure ([428]).
12. In the space of twenty-four hours, 57 hogsheads of air flow to the lungs (429.7).
13. In the same space of time 24 hogsheads of blood are presented in the lungs to this quantity of air (424.10).
14. In the mutual action that takes place between these quantities of air and blood, the air loses 15,757.9131 grains, or 328¼ ounces of oxygen, and the blood 10 ounces and 116 grains of carbon ([445]).
15. The blood, while circulating through the lungs, permanently retains and carries into the system—of oxygen, 2,648,809 grams; and of azote, 2,267,104 grains ([458]).
16. The ultimate results are two:—
1st. While the chemical composition of the blood is essentially changed, its weight amidst all these complicated actions is maintained steadily the same; for the weight of carbon which is discharged by the blood is precisely compensated by the united weight of the oxygen and azote which it absorbs ([459]).