TABLE LXVI (continued). 



By the method of taking temperatures the lag is assumed to be nil for Cape Evans " C " and " D." 



Ill the case of the observations at Christchurch, in 1910, it was found necessary 

 to calculate the corrections for the period of swing of each single pendulum, the change 

 of temperature shown by the thermometer in the dummy pendulum per hour being 

 given in this case in column 1 and the correction applied in column 2. 



Christchurch, 1910. 



No. 5 



Rise of Temperature 

 per hour. 



.. 0-9oC. 

 -83 

 -23 

 -49 



83 



Correction applied. 



+24xlO~ 7 sec. 

 +21 

 + 6 

 + 12 



F 2 



