m 



ON RESPIRATIorr. 



Ca?cuIat:ion for 

 hidrogen. 



Calculation for Hidrogen. 

 Hidrogen before Experiment, 

 The mixture before the oxperitnent was found to contaiH 



More nitrogen 

 evolved in the 

 early than in 

 the later 

 periods. 



100 : 71-4 :: 750 : 535-50 

 therefore the total quantity must be 535*50 cubic inches. 



Hidrogen after Experiment. 



No. 1. 250 100 : 32 :: 250 : SO 



2. 250 100 : 66-6 :: 250 : 166-50 



3. 250 100 : 70-5 :: 250 : 176-25 



66 in A 100 : 70-5 :: 66 : 46-53 



Hidrogen found after experiment 469-28 



Hidrogen before the experimsent 535-50 

 Ditto after - - 469-28 



Loss of hidrogen - - 66-22 



In this experiment, as well as in those with oxigen, the 



proportion of azote evolved was greater in the early than in 



the later periods, and it becomes interesting to comtrast them: 



thus we know that 52*14 cubic inches of azote were in 



the vessel with the animal at the 



beginning of the experiment^ 



and that, of the250 cubic inches 



of mixed gases passed in the first 



fifteen minutes, only 184 could 



be expelled into gasometer C, 



(100: 6-6 :: 184; 12*14.) which 



contained only 1^-14 



making together 64-28 of azote, which was all that 

 could have been expected in the first gasometer of 250 after 

 respiration, supposing thezo/io/e of the common air had been 

 expelled ; but we detected 112*50, or an increase of 48.22 

 cubic inches in fifteen minutes. 



The second gasometer, before it was connected with the 

 glass A, contained 16*50 cubic inches of azote; we found 

 however about 26, and what is remarkable, in the last ga- 

 someter there was no increase at all. 



Calculation 



