712 Experiments 



At 4:30, new ventilation, and pressure raised to 3 atmospheres. 



At 4:40, the same; pressure at 4 atmospheres. 



At 4:55, the same, 5V4 atmospheres; little convulsions begin to 

 appear. 



At 5:06, new ventilation carried to 6 atmospheres. Convulsions 

 return, in spasms. 



Dead about 6:50. 



The air then contained 73 per cent of oxygen and 0.5 per cent of 

 carbonic acid. 



The oxygen tension P x 0-> = 438 corresponds to 21 atmospheres 

 of air. 



Blood very red in the jugular. Bloody suffusions extending over 

 the whole cranium. 



Experiment CCLXV. March 29. Sparrow placed in the small 

 Seltzer water apparatus. 



At 2:50 we begin to compress oxygen up to 8 atmospheres; the 

 capillary cock being open, the compression maintained is carried on 

 in a current of air delivering more than a liter per minute. 



At 3:15 great convulsions occur; I allow two attacks to succeed 

 each other, at three minutes interval. Then, rapid decompression. The 

 bird pecks the finger which I offer it, and appears intelligent. 



Its rectal temperature is 32°. When out of the apparatus, it has a 

 third attack, and dies at 3:22. The blood of the jugular vein is dark 

 and contains no free gases. 



Experiment CCLXVI. July 9. Sparrow taken to 7 atmospheres of 

 superoxygenated air. 



After 10 minutes, seized by tonic convulsions. Taken out after 

 15 minutes; the convulsions continue, or rather the bird is in constant 

 opisthotonos. From time to time, the stiffness increases; the bird cries 

 out, spreads its wings, and wraps itself in them; the tail feathers are 

 spread out. Remains sensitive and appears intelligent. The attacks of 

 rigor are some of them spontaneous, others clearly provokable by 

 stimuli. 



It dies 20 minutes afterwards. 



Experiment CCLXVII. July 18. Sparrow taken to 5 atmospheres 

 of superoxygenated air. 



After 5 minutes, vomits, and appears in very bad shape. But the 

 convulsions do not come until about 20 minutes after, and they are 

 violent. 



Taken out 5 minutes afterwards, it continues to have convulsions 

 and stiffness with opisthotonos. Pecks the finger presented to it. Its 

 rectal temperature is 37°. 



Two hours after, is perfectly recovered; its temperature has risen 

 to 41°. 



Experiment CCLXVIII. May 24, 1874. Experiment made before a 

 Committee of the Academy of Sciences. 



Sparrow taken to 6 atmospheres, superoxygenated. It is 4 o'clock. 



After about 15 minutes, slight convulsions occur, soon followed 

 by severe attacks. 



