EXPLANATION OF TABLE (B). 



An asterisk affixed to any number indicates that it is derived from less than twelve 

 months of observations : in no case however ave annual amounts given for which more 

 than three months had to be found by interpolation, which was effected either by 

 using the observed amount at the nearest station during the time required, or by 

 using the means from adjacent years for the same month or months. The first mode 

 of interpolation is quite reliable, and was always preferred to the second. Blanks 

 for any one year indicate either no observations or an insufficiency (that is, less than 

 nine months) of record during the year. The annual means at the bottom of each 

 column are taken from the preceding table (A), whenever the series was not con- 

 tinuous. 



(105) 



