40 



GAS ANALYSIS. 



[CH. II 



into the burette. L is closed and H disconnected. The 

 volume drawn in is then measured by means of the 



u 



iG 



Fig. 9. Exp. 52. 



graduations on Q, after bringing the water in the two 

 tubes to one level. To absorb the COj H is connected 

 with the india-rubber tubing G of the absorption pipette 

 (fig. 8). F is raised, and L and the clamp G opened. The 

 gas is thus forced over into D where it is retained for a 



