62 



THE COMPOSITION OF EXPIRED AIR. 



No. 5. Brown-SSquard E.xperiment. 

 Commenced at 6 p.m., March 8, 1894. Sparrows in 7-litre bell jars. 5 in series. 



No. 6. Brown-S^quarij Experiment. 

 Commenced at 8.45 a.m., March 12, 1894. Sparrows in 7-litre bell jars. 5 in series. 



No. 7. Brown-S^quard Experiment. 

 Commenced at 9.15 a..m,, March 13, 1894. Sparrows in 7-litre bell jars. 5 in series. 



