548 Experiments 



Lethal air: O. 14.5; CO 9.8. 



CO. 



CO- + Oa = 24.3; = 1.51. Oxygen tension = 3.0. 



O* 



LXXVII. Weight 490 grams. Bell- jar of 10 liters. 



Began at 1:45. Brought to a pressure of 12 cm. at 2:45. 



Dies at 3 o'clock; 17 minutes after, temperature is 33.3°. Lived 15 

 minutes in 1.5 liters of air at 76 cm.; that is, 4.9 minutes per liter and 

 per 1000 grams. 



Lethal air: O. 14.5; CO? 16.0. 



CO. 



CO, + 0, = 24.3; =1.51. Oxygen tension = 2.1. 



O. 



Experiment LXXVIII. Weight 485 grams. Bell-jar of 13.5 liters, 

 pressure 76 cm. 



Began at 3:24; no uneasiness. At 3:30, pressure lowered 50 cm.: 

 staggers, then recovers; respiratory rate 100, walks a little. At 3:34, 

 pressure lowered 56 cm.; respiratory rate 135; at 3:35, pressure low- 

 ered 58.5, lies down on its belly. At 3:40, actual pressure 13.6 cm.; 

 respiratory rate 80, violent, painful. Cocks closed. 



3:45, still lying down, pupils dilated; 3:46, little convulsive shud- 

 ders; 3:47, fallen on its side; convulsive movements; rigidity; belly 

 enormously swollen. 3:49, dies, having lived 9 minutes. 



After 13 minutes, rectal temperature is 34.6°: after 36 minutes, 

 31.8°; after 1 hour 16 minutes, 28.4°, and rigidity begins; after 2 hours 

 11 minutes, 25.4°; slight rigidity. 



Lethal air: O. 19.1; CO. 2.3. 



CO. 



CO. + O. = 21.4; = 1.27. Oxygen tension = 3.4. 



O. 



Experiments LXXIX-LXXXI, simultaneous. May 28. Pressure 76.3 

 cm. 



LXXIX. Weight 620 grams. Bell-jar of 16 liters. 



Began at 2:32; at 2:35, pressure lowered 41.3 cm., that is, 35 cm. 

 of actual pressure; cocks closed. 



At 4:50, falls on its side; at 5:30, dies; 30 minutes after, its rectal 

 temperature is 28°. 



620 grams lived 2 hours 55 minutes in 4.44 liters of air at 76 cm. 

 Which gives 24 minutes per, 1000 grams and per liter of air at 76 cm. 



Lethal air: O. 4.9; CO. 17.2. 



CO, 



CO. + 0. = 22.1; =1.07. Oxygen tension = 2.2. 



O, 



LXXX. Weight 520 grams. Bell-jar of 13.5 liters. 

 Began at 2:37. At 2:44, pressure 27.8 cm.; cocks closed. 

 At 4:10, fallen on its belly; at 4:55, on its side; dead at 5:05; 15 

 minutes after, its rectal temperature is 28°. 



