Gases of the Blood 



633 



Dies at 6:53; I immediately draw with a cannula 25 cc. of blood 

 from the left heart, which contains 2 0; C0 2 29. 

 The air of the bag contains 2.5 of oxygen. 



Let us refer now, from the special point of view which interests 

 us, to the two experiments CLXXXVII and CLXXXVIII. The pre- 

 ceding graph shows us that the oxygen of the blood diminished just 

 as fast as the tension of the oxygen of the air; that is not surprising, 



Fig. 38 — Variations in the gases of the blood and the oxygen of the air in 

 asphyxia in closed vessels, the carbonic acid being absorbed: to 

 make the figure clearer, the ordinates corresponding to the oxy- 

 gen content of the air are twice the height of the others. 



