ON RESPIRATION. 237 



Summary of the Experiment. 



Therm. 



Cas before 

 Exper. 



Gas after 

 Exper. 



Defici- 

 ency. 



Carbonic 

 Acid found. 



56'' 



816 



814 



2 



78-91 





Cubic Inches 

 pfer Minute. 



Time, 

 h " 

 1 11 



Oxigen 

 missing. 



Azot 

 added. 





1-11 



36«20 



34-20 



Sumr 



The quantity of azote added, of oxigen missing, and of car- 

 bonic acid form?d, were smaller than in the last experiment; 

 but the animal in this instance was smaller, as well as the 

 quantity of oxigen passed through in a given time. 



In this case, as in the human subject, the increase of Increase of ni. 

 azote takes place principally in the early periods. The J°^jje wfn-^ 

 whole azote contained in the 66 cubic inches, confined withning, 

 the pig, was only 52-14; but supposing, which perhaps 

 was not the case, that the 66 of common air were expelled 

 by the first 250 cubic inches of oxigen, we shoulu have 

 250 

 less 6Q 



184 of oxigen, 

 containing 5 per cent azote, or 9-20 cubic inches; the.<!e 

 added to the 52-14, would make 61-34 of azote to be found 

 in the first gasometer, of respired gas, but we detected 75, 

 so that even on this supposition 13*66 of azote were added 

 in the first twenty-four minutes. 



The azote contained in the second gasometer before respi- 

 ration Avas 12-50 cubic inches, but after it had been respired 

 for twenty-three minutes, we found 23*75, or an increase 

 of 11-25 azote. The azote contained in the third gasome- 

 ter, before respiration, was, as before, 12*50 cubic inches; 

 but after it had been respired for twenty-four minutes, we 

 found 20, or an increase of 7*50 azote. 



The azote contained in the 66 cubic inches was 3*30, but 

 we found 5-28, or an increase of 1-98 azote. 



From the results of these experiments it seemed, th at Blood dHipostd 

 when the usual proportion of azote was not present in thet^opcn, when 

 eas resmred, there was a disposition in the blood to give in deficient 

 ^ , . , . , , ^p:oportion. 



out a certain quantity in exchange for an equal volume ot 



oxigen, and we resolved to try, whether this circumstance 

 Vol. XXV.—Supplement. Z Mould 



