208 
Transactions of the Boyal Society of South Africa. 
Table 8 gives the monthly deviation of the duration of sunshine from 
the normal means— shown as in the other Tables at the foot ; and Table 9 
the cloudiness of the sky. The numbers in these two Tables are, as a 
rule, the inverse of each other, the cloudiness tending to a maximum 
when the sunshine is a minimum. 
Table 10 gives the monthly durations of rainfall in hours. The yearly 
deviations are shown in the last column. 
Tables 11 and 12 give the approximate duration of electrical phenomena 
from eye and ear observations. The numbers in these two Tables, 
especially the latter, must be regarded as lower limits, for some thunder 
must escape hearing, and some lightning must escape attention on account 
of the obstruction to the horizon by trees. 
The five Tables 8-12 are in fair agreement with each other ; but 
neither exhibits such concordance with Table 6 as might have been 
expected. 
Table 13 gives the deviation values for what is called the " tempera- 
ture in the sun " as registered by a maximum black bulb in vacuo. In 
this Table the year 1909 is remarkable, every month save February 
showing a temperature higher than the normal mean of the month. Of 
the year 1897 the same may be said, though to a less degree. The year 
1909 was the most clouded year of the period, while, curiously enough, 
1897 had the least cloud. The monthly maximum temperatures in the 
shade show no such agreement (Table 14). 
Tables 15 and 16 give minimum temperature deviations, in the shade 
and over a grass lawn respectively. 
Tables 17, 18, 19 give respectively the temperatures of the dry bulb, 
the temperatures of the dew-point, and the relative humidities deduced 
from hourly readings of the dry and wet bulb thermometers. 
Table 20 is supplementary to the general purpose of this paper. It 
gives the rainfall of Kimberley from 1877 to 1896, as observed by the 
late Mr. F. W. Matthews, and the rainfall of Kenilworth from 1894 to 
1911. 
Comparing now the monthly ^lus and minus values of the deviation 
from the normal wind direction with the plus and ?ninus values of the 
other elements (leaving out zero deviations), we have the following 
results : — 
Magnitude of resultant 
Barometric pressure . 
Sunshine 
Cloud 
Thunderstorms 
Like Sign. 
93 times 
Unlike Sign. 
82 times 
104 
82 
88 
82 
68 
83 
74 
81 
