534 Experiments 



hour 20 minutes in a quantity of air corresponding to 2 liters, at 

 normal pressure, that is, 40 minutes per liter. At 4:35, rectal tempera- 

 ture 18°. 



Lethal air: O. 7.6; CO. 12.0. 



CO. 



CO. +C = 19.6; = 0.90. 



O. 



XLIII. Bell- jar of 5 liters. 



Entered at 3 o'clock. Pressure brought to 27.5 cm. Living at 5:35. 

 Found dead at 5:05. 



Lethal air: O. 10.4; CO. 8.8. 



CO. 



CO. + Os = 19.2; = 0.83. 



O. 



Experiment XLIV. December 13. Outside temperature -\-6°. Pres- 

 sure 77 cm. 



Sparrow placed under bell-jar of 3.2 liters, at 2:45. Pressure 

 brought to 30.5 cm. including the following action of the cold. The bell- 

 jar is surrounded by a mixture of ice and salt. 



At 3:35, still living; at 3:45, dead. Lived about 55 minutes in an 

 equivalent of 1.28 liters of air, that is, 43 minutes per liter. 



The temperature of the bell-jar is then — 5°. Rectal temperature 

 of the bird + 16°. 



Lethal air: O. 11; CO. 8.8. 



CO. 



CO. + 0. 3= 19.8; = 0.89. 



O. 



Experiments XLV to XLVI, simultaneous. December 14. Temper- 

 ature + 6°. Pressure 76.5 cm. House sparrows. 



XLV. Bell-jar of 3.2 liters. 



Placed under bell-jar at 12:50, total reduction of pressure 29.5 cm. 



The bell-jar is surrounded with ice and salt. The interior ther- 

 mometer registers + 1° at 1 o'clock; at 1:20, it is — 2°; at 1:35, — 4°; 

 at 2:05, —4°. 



At 2:05, the bird is still alive; dead at 2:10. Lived 1 hour 20 min- 

 utes in the equivalent of 1.24 liters of air, that is, 1 hour 4 minutes 

 per liter. At 2: 17, rectal temperature 15°. 



Lethal air: O. 10.3; CO. 7.4. 



CO. 



CO. + O. = 17.7; = 0.70. 



O. 



XLVI. Bell-jar of 3.2 liters. 



Entered at 2:42. Pressure brought to 29.5 cm. No cooling mixture. 

 The interior temperature of the bell-jar at 3:05 is +8.5°, and at the 

 time of death, +6.5°. At 4:15, very sick; at 4:25, dead. Lived 1 hour 



