Death in Closed Vessels 541 



Soon closes its eyes and seems to sleep. Dies at 4:30, after 1 hour 

 of uneasiness. Ten minutes after death, rectal temperature is 35.0°; 

 after 25 minutes, it is 33.8°: no rigidity. 



Lethal air: O 13.4; CO 6.4. 



CO, 



CO + O = 19.8; = 0.87. 



O 



Oxygen tension = 4.8. 



LIV. Similar. Bell-jar of 7.5 liters. 



Began at 3:18; at 3:20, decompression of 33 cm., no uneasiness; at 

 3:27, 51 cm. of decompression, vomits; at 3:28, actual pressure 22 cm. 

 Cock closed. 



At 3:32, falls and seems about to die; a little air admitted and the 

 pressure rises to 32 cm.; the bird gets up. Same procedure repeated 

 twice. At 3:58, pressure is 23.5 cm., the bird has half risen; cocks 

 closed. 



At 4:10, pressure lowered to 22.5 cm. Dead at 4:35, without con- 

 vulsions, after about 1 hour 10 minutes of respiratory embarrassment. 

 After 20 minutes, the rectal temperature is 30.2°; after 30 minutes, 

 29.7°: no rigidity. 



Lethal air: O 17.1; CO 3.3. 



CO. 



CO. + O = 20.4; .= 0.87. Oxygen tension = 5.0. 



O2 



LV. Owl five years old, weighing 170 grams. Bell-jar of 11.5 

 liters. 



Began at 3:08; considerable agitation, which lasts until 3:13, when 

 the pressure has been lowered 36 cm., the bird then grows calm. At 

 3:16, pressure has been lowered 44 cm., vomits twice. At 3:21, 48 

 cm., at 3:26, 57 cm., that is, approximately 19 cm. of actual pressure. 

 Falls and is about to die; pressure raised to 28 cm., the bird gets up 

 after a few minutes. Same procedure repeated twice, but each time 

 the bird is evidently less affected. At 4:03, pressure is 20.2 cm.: bird 

 falls; cocks closed. 



At 4:10, lowered to 19 cm., bird is still prostrate, beak forward. 

 Dead at 4:45, without convulsions, after about 1 hour 20 minutes of 

 respiratory embarrassment. Twenty-two minutes after death, rectal 

 temperature 30.2°; after 30 minutes, 29.6°: no rigidity. 



Lethal air: O 17.6; CO. 2.6. 



CO 



CO= + = 20.2: =0.79. Oxygen tension = 4.4. 



' O2 



We see that our rule is verified, in spite of an irregularity 

 greater than usual, presented by the experiments made at normal 

 pressure. The value of the oxygen tension in the lethal air was, 

 in fact: at 76 cm., 3.3; at 27.7 cm., 4.8; at 22.5 cm., 5; at 19 cm., 4.4. 



