Compressed Air; 2 Poisoning 723 



At 5:05, I drew 33 cc. of blood from the carotid . . . . C 

 At 5:30, drew 33 cc. of blood also from the carotid . . . . D 

 The autopsy shows the heart full of dark blood on the right, a 

 little red on the left. There are in the bladder some drops of urine 

 with an exceedingly high sugar content. The liver contains much 

 sugar. 



Blood A (air, normal pressure) contained . . O, 14.4; C0 2 41.0 

 Blood B (oxygen, 7 atmospheres) contained . . O, 24.1; C0 2 68.5 

 Blood C (air, normal pressure, 40 min. after decompression) con- 

 tained . . O, 15.8; CO, 16.5 



Blood D (air, 70 min. after decompression) contained O, 15.8; 

 C0 2 28.3 



The gas in the bag contained before the experiment 79 per cent 

 of oxygen; the oxygen tension in B was probably 74 x 7 = 518; it rose 

 to a maximum of 550 at 4:38. 



Experiment CCLXXXI. November 27. Shepherd dog, weighing 

 16 kilos. 



Tube in the trachea; rectal temperature 38.5°. 



At 4:50, drew 33 cc. of blood from the left carotid A 



Placed at 5:08 in the compression apparatus with the oxygen 

 bag, without the potash flask. 



At 5:12, pressure is 1% atmospheres; drew 33 cc. of blood, very 

 red B 



At 5:48, 7 atmospheres; this pressure maintained, and at 5:50, 

 drew 39 cc. of very red blood, without free gases C 



At 5:53, decompressed in 2 minutes. 



Withdrawn; temperature 38.5°. Is stiffened, and every three or 

 four minutes, enormous tonic convulsion, with very violent opis- 

 thotonos, suspension of respiration, the heart continuing to beat, al- 

 though more slowly. The eye lacks sensitivity. The excitability is 

 much less evident than in strychnine poisoning. There are 4 or 5 of 

 these frightful convulsions during which it seems as if the animal is 

 going to fall from the table. 



At 6:10, I administer to the dog a mixture of chloroform and 

 ether; at the beginning, it seems as if the convulsions grow worse. 

 But at the end of 2 or 3 minutes they disappear, and there are only 

 quiverings of the front legs, like those caused by phenol, which dis- 

 appear in their turn, as does the stiffening; the animal becomes re- 

 laxed and calm. 



6:15, the anesthetic withdrawn. Sensitivity returns, then some 

 fits of stiffening; but there are no more great convulsions. Tempera- 

 ture 39°. 



6:22; drew 33 cc. of blood, medium red D 



6:45; the temperature is 38.5°. 



7 o'clock; drew 33 cc. of blood, very dark E 



The next day, the animal is quite recovered. 



Blood A (air) . . contains, in 100 cc. . . 2 16.9; CO, 33.1 



Blood B (oxygen, 1% atm.) contains, in 100 cc. 2 21.4; CO, 36.6 



Blood C (oxygen, 7 atm.) . . contains, in 100 cc. 2 32.5; CO, 

 73.8; N 4.1 



