Death in Closed Vessels 561 



Lethal air: CO. 63.3; O 17.5. 



CO + Oa = 80.8; CO. = 0.98. CO=xP = 28.3. 



Experiment CIX. January 29. Bell-jar of 675 cc; mountain spar- 

 row. 



Pressure lowered 50 cm., the bird became sick; oxygen admitted; 

 second decompression carried to 60 cm., sick; oxygen admitted. Closed, 

 cocks at 3:35. 



Left at normal pressure. At 5 o'clock, panting; at 6 o'clock, died 

 without convulsions; a slight bloody suffusion on the cranium. 



Lethal air: CO* 24.8; O. 63.3. 



Experiment CX. January 30. Bell-jar of 1.3 liters. 

 Pressure lowered 44 cm., 58 cm., 36 cm., then 48 cm. Closed cocks 

 at 3:50; dead at 6 o'clock. 



The inner pressure was 25 cm. 

 Original mixture: O. 89.2. 

 Lethal air: CO. 72.1; O. 15.3. 



CO. 



CO. -!- O* = 87.4; = 0.97. 



O. 



CO. tension: 23.7. 



26 

 Oxygen tension: 15.3 x — = 5.0. 



76 



Experiment CXI. January 31. Bell-jar of 675 cc. 



Pressure lowered 40 cm., 50 cm., 50 cm., and compensated by oxy- 

 gen. The last time, the pressure was lowered 55 cm. Closed cocks at 

 3:20. Died at 5:15; no bloody suffusions on the skull. 



Original mixture: O. 79.6. 



Lethal air: CO. 35.3; O. 42.3. 



CO. 



CO. + O. = 77.6; = 0.94. CO. x P = 25.5. 



O. 



Experiment CXII. January 31. Bell-jar of 1.3 liters. 

 Pressure lowered 40 cm., 50 cm., 50 cm., the last time, 43 cm. 

 At death, the pressure is only 36 cm. 

 Original mixture: O. 89.8. 

 Lethal air: CO* 57.6; O. 30.1. 



CO. 



CO. + O. = 87.7; = 0.96. CO. x P = 27.2. 



O. 



Experiment CXIII. February 2. Bell- jar of 1.350 liters. 



Pressure lowered 30 cm., 50 cm., then 50 cm., and compensated by 

 oxygen; the last time pressure lowered 58 cm. 



Closed cocks at 3:45; died at 6:45; the pressure was lowered only 

 51 cm. 



