THE COMPOSITION OF EXPIUED AIR. 



No. iS. Bkown'-S^quard Experiment. 



Commenced at 9.45 .\.m., April 17, 1894. Mice in 7-litre bell jars. 5 in scries. 



No. I, 14 g. No- -• -3 g- ■'-'>■ 3. -'3 g- 



Time. 



22J " 

 3' J " 

 49 " 



CUo 



' ).. O. i CO.. O. I CO,. I O. , CO, 



I' -34 



12.21 



«5 



12.94 



8.93 



7-25 

 6.278 



d 



e 



f 



6-945 



12.897 



13-77 



14-479 



13-945 



Remarks. 



8 litres aspirated. All are 



slightly opi>rcssed. 



Current increased. 

 133 litres aspirated. All 



are lively. 

 159.5 litres aspirated. 



Current continued. 

 219 litres. All are more 

 or less oppressed 



. 1 2 

 .66 



-944 

 a 

 b 

 c 



5-46 



Experiment stopped. All 

 living; also white 

 mouse placed in No. 5, 

 and small gray mouse 

 in No. 4, as well as 

 mouse d. 



a Fresh house mouse in No. 5 ; died in one minute. 



1) No. 5 of Experiment 16 in No. 5 ; died in one minute. 



c White mouse, used in Experiment 16, in No. 5 ; remained alive to end of experiment. 



d White mouse, used before, in No. 4 ; remained alive to end of experiment. 



e House mouse (fresh) in No. 4 ; remained alive to end of experiment. 



f House mouse (large) in No. 4 ; died in two minutes. 



