Recombination of Ions in Air and 7^emperature of Air. 661 



error, &c. : for it is difficult to keep all the conditions abso- 

 lutely steady dnrino- a whole series of observations, such as 

 is represented by any one of these curves, especially at the 



Ficr. 8. 



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-04 -08 -12 -16 -20 24 '28 -.32 -36 "40 "44 '48 



Time in sec. 



■o6 -60 



higher temperatures. The agreement is therefore quite close 

 enough to show that equation (2) represents the law of 

 recombination at these higher temperatures quite as Avell as 



