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soda lime, extracts the COl' of the air as it enters L when any of the 

 solution is drawn into the pipette E. The solution of NaOH or KOH in 

 D in Fig. 1 is not used further after escaping according to Grafe's 

 figure. In Fig. 2 I show that it is collected in another bottle H, which 



is similar in size and construction to D. By elevating the bottle G to a 

 position M on the ring stand A above D and opening J, as shown by 

 Fig 3, the same solution of NaOH or KOH runs back into D and can 

 be used again. By this apparatus a large number of measurements 

 may be quickly and very accurately made. The tube F with soda lime 

 is not necessary in Figs. 3 and 4 since the KOH removes the CO2. 



