860 Experiments 



seem to suffer from the decompression; no gas in the jugulars, in 

 which the blood was very red. Enormous bloody suffusions on the 

 cranium. Rectal temperature 35°. At 4:35, great convulsions, died. 

 Rectal temperature 34°. The blood was very red in the left heart, 

 without gas. In the right heart and the jugulars, it was dark with 

 gas in very small bubbles; these bubbles were present in the portal 

 system. 



Experiment DIX. October 27. Sparrow (cylindrical receiver). 

 Taken to 8 atmospheres. Decompression made in 5 seconds. Taken 

 from the apparatus, did not seem at all inconvenienced. 



Experiment DX. October 27. Sparrow (cylindrical receiver). 

 Taken to 10 atmospheres. Decompression made in 5 seconds. No 

 symptom, survived. 



Experiment DXI. October 27. Sparrow (cylindrical receiver.) 

 Taken to 12 atmospheres. During this time remained motionless 

 at the bottom of the apparatus. When sudden decompression was 

 made, darted to the top of the cylinder, then fell back. Was dead 

 before being taken from the apparatus. Air in quantity in the jugulars 

 and the right heart. 



Experiment DXII. October 27. Sparrow (cylindrical receiver). 

 Taken to 14 atmospheres. Sudden decompression; died in a few 

 minutes. Air in quantity in the jugulars and the right heart. 



Experiment DXIII. October 27. Sparrow (cylindrical receiver.) 

 Taken to 14 atmospheres. Sudden decompression, without symp- 

 toms. Found dead the next day. 



Experiment DXIV. October 27. Sparrow; cylindrical apparatus. 

 Taken to 15 atmospheres, and suddenly decompressed immediately. 

 Removed from the apparatus, could not walk, flapped its wings, had 

 convulsions, and soon died. Air in quantity in the jugular veins and 

 the right heart. 



Experiment DXV. June 29. Two sparrows were taken in one hour 

 to a pressure of 7 atmospheres under a current of air maintained by 

 the large sheet-iron cylinder. At this moment, the rubber communi- 

 cation tube burst; the decompression was instantaneous. The two 

 birds died in a quarter of an hour. 



We must add to these experiments made on sparrows the results 

 of a great number of others already reported with another purpose 

 in the subchapter of Chapter I. We shall return to them later. 



For the moment I set aside the discussion which these experi- 

 ments deserve and report those made on mammals. 



First, rats, for which we generally used the small glass appa- 

 ratuses. 



