Compressed Air; 2 Poisoning 729 



At 5:10, another 33 cc. of blood, which is redder; the convulsions 

 had ceased a few minutes before D 



At 6 o'clock, the animal is no longer in convulsions; when com- 

 pletely unfastened and placed on the floor, it walks like a hyena, 

 hind quarters very low. It is set aside for the collection of the urine. 



It does not urinate until the next day at 3 o'clock; no sugar. At 

 that time, its temperature has risen to 39.5°. 



Blood a, boiled with charcoal, does not reduce Fehling's solution. 



On the contrary, a mixture of bloods B, C, D, boiled in a similar 

 way, gives a very considerable reduction. A part of the colorless 

 liquid obtained by boiling this blood with the addition of water and 

 much charcoal, being placed on the drying-stove, with brewer's yeast, 

 in a tube inverted over mercury, ferments and gives off a gas which 

 is absorbed by potash. Another part, cooled with copper reagent, dis- 

 colors it and precipitates. 



Blood A (air, normal pressure) contained 2 16.0; C0 2 44.5 



Blood B (in open air, convulsions) .... contained 2 9.7; C0 2 48.2 

 Blood C (after 25 min. in the open air) contained 2 13.9; CO, 10.5 

 Blood D (after 1 h. 10 min. in the open air) contained 2 18.5; C0 2 19.0 



The air of the bag after the experiment contained 61.5% of 

 oxygen and 12.9% of carbonic acid. The oxygen tension had risen to 

 nearly 420, that is, 21 atmospheres of air. 



Experiment CCXC. February 4. Large dog, which had not eaten 

 since the day before in the morning. Rectal temperature 37.5°. 



At 3:15, 33 cc. of rather red blood drawn from the carotid. . . A 



A small quantity of this blood is boiled with water, sulfate of 

 soda, and charcoal. 



The animal, furnished with the muzzle and the oxygen bag, is 

 placed in the apparatus at 4 o'clock. 



At 4:40, I make the decompression in a few minutes; the pressure 

 had reached 7 Vz atmospheres. 



The animal is in excitable convulsions; its temperature is only 36°. 



At 5:20, drew 33 cc. of very red blood B 



The animal had just had convulsions, and in the interval breathed 

 very rapidly. 



At 5:40, drew another 33 cc. of blood C 



The convulsions are over at the time; the animal, when unfastened, 

 cannot walk. 



It survives; the urine which it voids during the night contains no 

 sugar; the very abundant saliva found in the muzzle did not con- 

 tain any either. On the other hand, blood B was certainly richer in 

 sugar than blood A. 



Blood A (before the experiment) contained 2 18.7; C0 2 44.0 



Blood B (afterwards, during the convuls.) contained 2 23.2; C0 2 19.4 

 Blood C (convulsions over) contained 2 20.3; CO. 22.0 



The air of the bag, after the experiment, contained 57.6% of 

 oxygen and 7.4% of carbonic acid. 



The oxygen tension had therefore risen to about 440, that is, 

 22 atmospheres. 



