ON RESPIRATIOK. OQX 



Calculation for Azote. 

 1000 cubic inches containing 5 per Calculation fox 



cent azote - - - 50 nitrogen. 



CO atmospheric air, containing 79 per cent 47-40 



Total azote before experiment, 97*40 



Ditto found after experiment, 147-52 



Increase of azote, 50-12 



This increase of azote was much more than equal to iiiQ 

 cubic contents of the animal's body, the deficiency of 4 

 cubic inches was doubtless oxi^en absorbed. 



Summary of the Experiment. ' 



Bar. Therm. Oxigen, &c. Gas after Defi- Sununary. 



inspired. experiment. ciency. 



29-05 57'-' 1060 1056 4 



Carb. acid Carb. acid Time Oxigen Azote 



found. per min. * missing. added. 



106 1-48 Ih. 12m. 54-07 50-12 



Experiment V. Oxigefi. 

 In this experiment we employed a smaller pig, which oc- Exp, 5. 

 ciipied the space of 3.3 cubic inches, and our object was to 

 keep him for the same length of time in a smaller quantity of 

 gas, we therefore only used 750 cubic inches of oxigen, be- 

 side the common air contained in the glass A and tube, 

 amounting to 66 cubic inches. The first 250 cubic ioches 

 were passed through the glass A into C in 24 minutes, 

 where it appeared to have undergone no alteration of vo- 

 lume; 250 cubic inches more were passed during the next 

 23 minutes, and these measured 248 in C; the last 2.50 

 were passed in 24 minutes, and the volume remained una!- 

 tered. The animal did not appear to sulier the slightest in- 

 convenience, except from the confinement. 



State of the Gas before Respiration. 



Oxigen. Azote. 



66 cubic inches of atmospheric air, = 13-86 52*14 State of the 



750 oxigen, containing 5 per cent azote, = 712-50 37*50 ^^'lirgj '^'^''^^ 



816 total consisting of 720-3G 89*64 



The 



