298 ON RESPIIIATIOX. 



CoulJ this Here the increase of azote appears rather greater, viz. 100 



have existed ill i • • u i ^ ^i i i ■ • xi • • i 



the lun"s be- <^^*'^i^' iiiches, Out the calculation ui this case is made upon 

 fofj; the exp«- the gas expired, and from the above statement, we may see, 

 '^'"^^*''^ ' that the evolution of azote goes on diminishing; we have 



sometimes even found, that towards the close of an experi- 

 ment it has almost been reduced to nothing. The ques- 

 tion now is, whether this increase of azote can be owing to 

 the residual gas contained in the lungs at the beginning 

 or has it been of the experiment, or whether a portion of oxigen is not 

 exchdiiged for actually exchanged for azote, when pure oxisiea tjas is 



oxi-'en? . , i ° '^ b & 



re:ipired. 



Here it may be useful to compare the azote found in 

 our former experimeats on oxigon, with the present. 



FcsuTts of for- 

 Kier experi- 



Bar. 



Oxigen 



Gas in- 



Therm spired. 



Gas ex 

 pircd. 



3193 



Dcfici 

 ency. 



67 



Time. 

 9 20 



Qaantity • I 

 respired Azote 

 in a Mi- evjlv- 

 nute, ed. 



348 110 



iferied 

 Capa- 

 city of 





53 



3260 



141 



30-3 



70 



S420 



3362 



53 



7 23 



461 



177 



225 



30-15 



70 



31.j0 



3060 



70 



b 45 



357 



187 



236 



29-9 



^1 



2668 



£544 



124 



13 



205 



105 



133 



No. 1. 



The greatest increase of azote was in the 2d aiid 3d expe- 

 riments, when the thtrmometer was at 70% which miglit 

 materially influence the results : in the other cases, it was 

 not higher than 63. 

 Capacity of live From the experiments of Goodwin, we might be inclined 

 lungs, ^^ ^dmit the capacity of the lungs, inferred from the 1st 



and 4th experiments, as very possible; but it seems diffi- 

 cult to conceive, that it can amount to 236 or 2'-25 cubic 

 inches, and yet this must be the case, unless a portion of 

 azote is given off from the blood, or there is some process 

 in pature by which it is capable of being produced from 

 oxigea. 



Having, by the kindqess of our friend Henry Cline, jun., 

 been furnished witji the lungs of a stout man, ^about five 

 feet ten inches high, taken from the body not long after 

 death, and in a sound state, we proceeded to aacertaii^ the 

 quantity of air contained in this organ after the most com- 

 plete expiration, as in death. 



Henry 



