Compressed Air; (X Poisoning 711 



After 2 or 3 hours, seems fairly well recovered, but dies in the 

 night. 



Experiment CCLX. February 5. Sparrow subjected to 5 atmos- 

 pheres, 4 of which are oxygen. The oxygen tension is about 400. After 

 about 15 minutes, strong convulsions occur; I allow 2 or 3 attacks, then 

 restore normal pressure. 



The rectal temperature is 32°. 



The bird has evidently retained all its intelligence; it pecks 

 viciously when a finger is presented to it, and uses its wings and feet 

 strongly. 



One hour afterwards, its temperature is 34°. It has had more of 

 the slight convulsive attacks, and cannot keep on its feet. 



3 hours afterwards, its rectal temperature has risen to 39.5°. 

 Survives. 



Experiment CCLXI. February 26. Sparrow; rectal temperature 

 40.5°. 



Subjected to 5 atmospheres, 4 of which are oxygen (tension of 

 about 400). 



At the end of 5 minutes, beginning of uneasiness. I restore normal 

 pressure rapidly by the capillary cock. 



The temperature is 40.3°, but it rises rapidly to 40.5° after respi- 

 ration in the air. The bird is very vigorous and very vicious. Red 

 cranial suffusions, in abundant spots. 



The bird walks, runs, climbs about the cage, but does not fly. If 

 it is tossed into the air, it has great difficulty in flying and soon falls; 

 it then refuses to fly up from the ground. 



Survives; the next day, it flies very well; the suffusions persist for 

 several days. 



Experiment CCLX1I. March 2. Sparrow at 5 atmospheres, 4 of 

 which are oxygen. 



After 5 or 7 minutes, convulsions begin; at the first appearance, 

 I open the little cock. The rectal temperature rises to 41°, but very 

 slowly after 38°. 



Small bloody suffusions. 



Experiment CCLXIII. May 23. At 4 o'clock, sparrow taken to 5 

 atmospheres, 4 of which are oxygen. Tension about 400. 



After 15 minutes, slight convulsions; at 20 minutes, severe con- 

 vulsions, two or three attacks. At 30 minutes, taken out. 



Rectal temperature, 33°. 



At 5:45, rectal temperature, 35°; still trembling, quite sick. 



At 7 o'clock, dead; muscular contractions singularly slow. 



Experiment CCLXIV. February 12. Sparrow; cylindrical appara- 



tus. 



At normal pressure, respiratory rate, 135. Raised to 3 atmospheres 

 of air, respiratory rate, 115. 



At 4:20, I pass a current of oxygen into the apparatus, and raise 

 the pressure to 2 superoxygenated atmospheres. 



