566 Experiments 



Red blood in the jugular; bloody suffusions on the scalp. 

 Lethal air: CO 2; O 17.5. 

 CO* x P = 18. 



Experiment CXXV. April 26. 

 'House sparrow; at 4:23, normal pressure, respiratory rate 135. 

 Began the compression. At 4: 27, 6 atmospheres, respiratory rate 96. 

 At 4:29, 9 atmospheres, respiratory rate 90; at 4:31, 12 atmospheres, 

 respiratory rate 90. At 4:53, very sick. Each inspiration, which is very 

 deep, is accompanied by a quivering of the wings. At 5:10, still a 

 few respirations; at 5: 15, dies. 



Lived 45 minutes. Scalp suffusions in spots; red blood in the 

 jugular. 



Lethal air: CO* 1.2; O 18.4. 



CO* x P = 14.4. 



Experiment CXXVI. May 7. 



Sparrow taken to 15 atmospheres; closed cocks at 2:15. At 3:20, 

 found dead. 



Lethal air: CO* 0.8; Cb 19.5. 

 CO x P = 11.2. 



Experiment CXXV II. May 17. 



Sparrow at 4 atmospheres; closed cocks at 4:45. 



Sinks down at 5:34; dies at 6:20. Lived 1 hour 35 minutes. Red 

 foam on the beak; scalp suffusions in blackish patches; venous blood 

 of normal color; no gas. 



Lethal air: CO 5.6; Cb 13.2. 



CO* x P = 22.4. 



Experiment CXXV III. May 18. 



Sparrow at 8 atmospheres; 3:17. 



Dead at 4:55; lived 1 hour 38 minutes. Red foam on the beak; 

 bloody suffusions in reddish patches; venous blood red and containing 

 some gas. 



Lethal air: CO* 2.4; O 16.8. 



CO x P = 19.2. 



Experiment CXXIX. May 21. 



Sparrow at 14 atmospheres; closed the cock at 4:55. Found dead 

 at 6 o'clock; lived less than one hour. 



Venous blood very red, with gas. Scalp suffusions very extensive. 

 Lethal air: CO 0.9; O 18.5. 

 CO2 x P = 12.6. 



Experiment CXXX. May 22. 



Sparrow; at 12 atmospheres, at 2:45. Found dead at 3:40; lived 

 less than 55 minutes. 



Red blood in the jugular, with gas. Scalp suffusions. 

 Lethal air: CO 1.3; O 19.1. 

 CO* x P = 15.6. 



