52 



A ligature being put around the trachea, I find that the animal 

 is then able to live generally from six to 8 or 12 minutes. 



The more the animal heat is diminished, the more, in general, 

 is the resistance to asphyxia^ except in cases where cooling has 

 been produced too quickly. 



On four adult rabbits, I put a ligature around the trachea, 

 and have obtained the following results : 



TABLE XI. ^ 

 NOB. Temperature of the animals. Duration of life. 



1, 391 Cents., (103 Fahr.) 3' 



2, 35 95 6 



3, 30| (between 86 and 87 Fahr.) 10 



4, 25 Cents., (77 Fahr.) 14 



On three guinea-pigs I put a ligature around the trachea, and 

 found the following facts : 



TABLE XII. 

 NOB. Temperature of the animals. Duration of life. 



1, 40 Cents., (104 Fahr.) 2f ' 



2, 35 '95 5| 



3, 30 86 12 



The longest persistence of life, after the cessation of breathing 

 which I have found in adult non-hybernating animals, has been 

 in a cat aged five months, and whose temperature had been di- 

 minished to 19 Cent, (about 67 Fahr.) in consequence of the 

 laying bare of the abdominal viscera, and of the ablation of the 

 cerebrum by small parts. 



I will say only a few words about my experiments on adult 

 birds. 



Two pigeons were dipped into melting ice. In one of them, 

 whose temperature had fallen from 42 Cent. (108 Fahr.) to 

 35 Cent. (95 Fahr.) life lasted six minutes after the ligature of 

 the trachea. In the other, life lasted nine minutes ; its tempe- 

 rature had fallen from 42 Cent. (108 Fahr.) to 30 Cent. 

 (86 Fahr.) 



I have obtained nearly the same results in experimenting on 

 fowls and on ducks. 



Physicians are generally astonished at seeing that men at- 

 tacked with cholera are able to live almost without breathing. 

 My experiments show that the principal, if not the only cause 



