Gases of the Blood 631 



6:25; cardiac pressure, from 11 cm. to 15 cm. 



6:30; respirations, 20; pulse, 92, very irregular; temperature 36.6°; 

 the expirations become more abrupt; the animal's feet are still sensi- 

 tive. 



6:35; air of the bag contains O, 4.6; C0 3 2.2. Blood 25 cc, dark; 

 contained O, 5.0; CO, 36.7. 



7 o'clock; respirations, 24, with very abrupt expirations; pulse, 84; 

 temperature 35°. Feet still sensitive. 



7:05; air of the bag contains 2 2.7; C0 2 1.9. 



7:15; the phenomena are appearing rapidly; the dog has just lost 

 sensitivity of the eye suddenly. Respirations, 4; pulse, 56; temperature 

 34.5°; cardiac pressure, about 4 cm. Took 25 cc. of blood, very dark; 

 contains O, 0.; CO. 20.6. 



Last breath at 7:17. 



We shall return to the different details of this protocol; but 

 limiting ourselves for the moment to what concerns the gases of 

 the blood, we can summarize the results of the analyses as follows: 



The air contains 100 cc. of blood contain 



Oxygen Oxygen CO, 



At the beginning i 20.9 19 48 



After V 2 hour 18.1 17 49 



After 1 hour 15.9 15 46.5 



After 1V 2 hours 14.1 13.6 46.3 . 



After 2 hours 12.2 • 



After 2% hours 9.6 12. 46.3 



After 3 hours 7.4 7.6 



After 3 hours, 20 minutes 7.1 42.8 



After 3V 2 hours 5.9 



After 4 hours 4.6 5. 36.7 



After 4 hours, 40 minutes 2.7 20.6 



Experiment CLXXXVIII. April 4. Dog weighing 10.600 kilos. Bag 

 containing 137 liters of air. Temperature 15°. Experiment begun at 

 2:05. 



2:07; respirations, 24; pulse, 92; temperature 38.5°; cardiac pres- 

 sure from 12.5 cm. to 18.5 cm. Took 25 cc. of blood, very red; con- 

 tained per 100 cc. O, 18.2; CO. 50.8. 



Slight agitation. 



2:35; respirations, 20; pulse 100, irregular; temperature 38.2° 

 Took air which contained: O^ 17.9; CO- 0.9. 



3:05; respirations, 18; pulse, 90; cardiac pressure has not changed; 

 temperature 38°. Took air: O, 16.3; CO, 1.6; drew 25 cc. of blood, 

 very red; contained: O^ 16.6; CO^ 47.7. 



3:35; respirations, 18, expirations prolonged; pulse, 72; temperature 

 37°. The air contained O? 14.8; CO^ 1.7. 



4:05; respirations, 16; pulse, 90; pressure of 12.5 cm. to 17.5 cm. 

 Air, O, 13.4; C0 2 1.9. Red blood, 25 cc, contains O, 15.9; CO.- 45.1. 



4:35; respirations, 16; pulse, 112; temperature 37°. Air, O2 10.4; 

 CO2 1.7. 



