i68 



Conductivity of Aqueous Solutions. Part VI. 



Table 52. Conductivity data for ammonium hydroxide Continued. 



Although every precaution was taken to preserve this stock solution, the results of these 

 experiments of February 13 and 14 when compared with those of January 31 to February 3 show 

 that contamination had suddenly taken place. They are included here merely to illustrate the 

 great effect especially at the higher temperatures of what must have been a minute contami- 

 nation; this effect consisted in this case of an increase of about 0.8 per cent at 18 and of 2.5 

 per cent at 156. That it was not due to contamination in transferring the solution to the 

 bomb is shown by the excellent agreement of the three earlier and of the two later values among 

 themselves. 



