Do the Mining Operations affect the Climate of Kimberley? 11 
red sand would make it almost certain that the climate of the vicinity 
must be materially affected by the considerable area of blue-ground 
exposed on the depositing floors. To test this I have compared the 
daily maximum temperatures of Kimberley and Kenilworth for the 
years 1894, 1895, and 1896, making use of 1,075 pairs of observations 
for the purpose. The Kimberley observations were kindly placed at 
my disposal by Mr. G. J. Lee,* F.R.Met.S., F.R.M.S.; the Kenilworth 
observations were taken by myself. 
Table II. shows the mean differences of maximum temperatures, 
Kimberley minus Kenilworth, month by month for the three years. 
A plus sign indicates that the Kimberley temperature was the greater, 
a minus sign that it was less. 
Massa) WUE 
Mean DIFFERENCES BETWEEN THE Maximum AIR TEMPERATURES 
oF KIMBERLEY AND KENILWORTH. 
1894. 1895. 1896. | Mean. 
SV AMUUEEY, ie.s elo a cle lsiticr os +27 +2:9 +58 | +3°8 
WGDEWANY 206% 0. 5s +1:1 +1°6 alee | +2'5 
VERON Ms anes sete, 3 +0°6 +0:1 sre eel 
PATHE ales Prasat ata 1:7 =1-9 Oi ee alah 
TUE STO he eae eee =22 —3-0 =O) | = IES 
Jte Cin Re hy —2:7 -  —3:0 —0°8 —2°2 
Sith 5 6 acts 5 es Sena =o —2'3 =I = 18) 
mest) ysnic acne conn: i) —14 05 "2 |) = 058 
SEPbOMMDeT sais evs .sere. +0°6 +0°2 +270). | +0°9 
October Mies won hk. +0°6 +4'8 +51 | +3'5 
November 1.2 4e6 soos oes +3°8 +64 +69 | ond 
WeCEUMIET. siege ciccoccsera es +2°4 +5:0 +6'8 | TET 
Some of the monthly differences are doubtless due to faults of 
exposure at both places. In September, 1895, the Kenilworth 
thermometers were transferred to a new, large, louvred screen, 
which, as tested by a slung thermometer, gave much more accurate 
results ; the effects of radiation from the ground being largely, if not 
altogether, eliminated. The greater differences since that time are 
due to this alteration. The Kimberley thermometers were in the 
same position throughout the period. They were mounted under a 
somewhat modified Glaisher stand. 
* Mr. Lee died in May last. Though not in any broad sense a meteorologist, 
yet he had taken regular climatological observations at his own second-order 
station for many years. Few men have had greater opportunities than he of 
amassing wealth, but the sordid pursuit of riches had for him no attractions. 
Living without ostentation, an earnest lover and devout worshipper of nature. 
Kimberley society scarcely knew of his existence; and Kimberley newspapers, 
characteristically, reported his death in grudging lines as that of a ‘local 
astronomer and weather-prophet” ! 
