Death in Closed Vessels 519 



XXV. Bell of 11.5 liters. 



Begun at 3:45. At 3:53, the pressure is 24.2 cm. Struggled; some- 

 what sick; lying down, yawns frequently; cock closed. 



At 4:15, gets up on its feet; at 6 o'clock, in fair condition; at 7:30, 

 somewhat sick; found dead at 9:30. 



Therefore lived about 5 hours in a bell the capacity of which 

 represents 3.66 liters; or about 1 hour 22 minutes per liter. 



Lethal air: O 13.7; CO* 5.4. 



CO, 



CO, + O, = 19.1 ; = 0.75. 



O, 



XXVI. Bell of 7 liters. 



Begun at 4 o'clock. At 4: 10, pressure of 24.2 cm. Struggled a great 

 deal; has convulsions and seems near death. Cocks closed. 



At 4:15, gets up on its feet; at 4:30, very lively, struggles a good 

 deal at 5 o'clock, becomes sick; at 6 o'clock, drowsy; at 6:20, dies after 

 violent convulsive struggling. 



Lived 2 hours 10 minutes, in a quantity of air corresponding to 

 2.22 liters; or 58 minutes per liter. 



At 6:32, rectal temperature 30.3°, is not quite stiff; at 6:45, stiff, 

 temperature 26.5°. 



Lethal air: O, 12.6; CO, 7.0. 



CO, 



CO, + O, = 19.6; = 0.84. 



O, 



XXVII. Bell of 5 liters. 



Begun at 4:15. At 4:21, reached a pressure of 24.2 cm.; struggled 

 at first, then grew calm at a pressure drop of about 42 cm. as the pre- 

 ceding ones did; did not fall. Cocks closed. 



At 4:22, staggers, vomits, crouches down; but soon gets up and 

 seems fairly well. 



At 5:30, very sick; at 6:10, dies. Lived 1 hour 50 minutes in a bell 

 the capacity of which corresponds to 1.55 liters of air; or 1 hour 10 

 minutes per liter. 



At 6:21, stiff; temperature 27.2°. 



Lethal air: O, 11.6; CO, 7.8. 



CO, 



CO, + O, = 19.4; = 0.84. 



0* 



XXVIII. Bell of 2.5 liters. 



Begun at 4:16. At 4:26, the pressure is 24.2 cm. Struggled, but 

 does not seem in danger. 



Dies at 5:30; lived 1 hour 4 minutes in a quantity of air corre- 

 sponding to 0.79 liters; or 1 hour 21 minutes per liter. 



At 5:50, found stiff; temperature 27.5°. 



Lethal air O, 12.6; CO, 5.9. 



CO, 



CO, + O, = 18.5; = 0.71. 



O, 



Average of the four experiments: O, 12.6; CO, 6.5. 



