406 Mr. Coathupe's Experiments on the Products 



an average of 124 experiments, gives 0*1 1 per cent, additive 

 to the apparent per centage of carbonic acid gas as derived 

 from any direct experiment. 



Second Interval. 9^ a.m. to 12 noon. 



64*4 parts were absorbed by the lime-water, 

 and 1697-8 : 64-4 : : 100 : 3-79 per cent. 



The average therefore of 15 experiments upon the air re- 

 spired between 10 a.m. and noon, and comprising 7 days, 

 indicates 3-79 per cent, of carbonic acid gas, which corrected 

 for tension will be 3'90 per cent. 



30-59 parts were absorbed by the lime-water, 

 and 802-5 : 30*59 : : 100 : 3-81 per cent. 



The average therefore of 7 experiments upon the air re- 

 spired between 12 noon and 1 p.m., and comprising 5 days, 



