676 Experiments 



C. Confined from 4:30 to 5:12 (42 minutes) under a bell of 11.5 

 liters, in which the pressure is rapidly brought to 20 cm. The volume 

 of the bell corresponds to 3.03 liters at normal pressure. 



The three animals remain quiet, except B, which moves a little. 

 C lies on his belly, but gets up when we excite him a little; he is 

 better towards the end of the experiment; none of them appears then 

 to suffer from the confinement. 



When the experiment is over, the rectal temperature of A is 38.1°; 

 of B, 33.1°; of C, 32.0°. 



The composition of the air is as follows: 



A. O 14.8; CO* 5.2. 



B. O 16.0; COa 3.9. 



C. O 17.2; CO* 3.2. 



So the oxygen consumed, in vessels containing about the same 

 quantity of air, was for A, 6.1 per cent; for B, 4.9 per cent; for C, 

 3.7 per cent. 



Establishing now the absolute value of oxygen consumption and 

 carbonic acid production during the 42 minutes of the experiment, we 

 find that: 



Oxygen CO. 



A, who had at his disposal 672 cc, has consumed 195 and produced 166 cc. 



B, who had at his disposal 666 cc, has consumed 155 and produced 123 cc. 



C, who had at his disposal 636 cc, has consumed 112 and produced 97 cc. 



Experiment CCXXXV, June 3. Rats of the same litter. Outside 

 temperature 25°. 



a. Placed from 2:20 to 4:50 (2 hours, 30 minutes) at normal pres- 

 sure, under a bell of 7.6 liters. 



b. Placed from 2:40 to 5:15 (2 hours, 35 minutes) at a pressure of 

 50 cm., under a bell of 11.5 liters, whose capacity at this pressure 

 corresponds at normal pressure to 7.57 liters. 



c Placed from 2:55 to 5:30 (2 hours, 35 minutes) at a pressure of 

 37 cm., under a bell of 15.5 liters, whose capacity at this pressure 

 corresponds at normal pressure to 7.53 liters. 



The animals remain very calm, and do not seem inconvenienced. 

 At the end of the experiment, the temperature of a is 35°; that of b, 

 34°; that of c, 32.5°. (The thermometer was not exact, and these values 

 should be considered not as absolute, but as comparative.) 



Chemical analysis gave: 



For a, : O? 11.3; CO* 8.1. 

 For b, : 0= 12.5; CO* 7.8. 

 For c, : O? 13.1; CO.- 5.9. 



Making the same calculations as for the preceding experiment, we 

 find that in 2 hours and 35 minutes 



Oxygen CO? 



a, who had at his disposal 1596 cc, consumed 729 and produced 615 cc. 



b, who had at his disposal 1589 cc, consumed 636 and produced 590 cc. 



c, who had at his disposal 1581 cc, consumed 587 and produced 452 cc. 



