244 Transactions of the South African Philosophical Society. 
compare excellently with the observatory standards there. Few gaps 
appear in the Lee register: scarcely any in earlier years, and not 
many in later years when the observer’s advancing age might have 
excused them. Necessary interpolations have been made whenever 
possible from the Kenilworth records. The site of the station was 
not good, nor was the exposure of the thermometers all that could 
be desired. The thermometers were mounted on a modified 
Glaisher stand, and consequently the maximum shade temperatures, 
particularly in the summer, were somewhat too high; the minimum 
shade temperatures, particularly in the winter, being correspond- 
ingly too low. The wet bulb being found erroneous has, unfortu- 
nately, prevented the inclusion of a moisture comparison between 
the two places. The barometer—a Fortin, with adjustable cistern, 
by Negretti and Zambra—was kept in good order and hung in a good 
place. It may be fairly claimed that until the establishment of the 
first-class meteorological station at Kenilworth, some three miles 
from Kimberley, no better series of observations of temperature 
and pressure, probably none nearly so good, has ever been made in 
Cape Colony north of the Hex River. 
The Durban observations, summarised in Tables 1-12, are taken 
from the Annual Reports of the Astronomer to the Government of 
Natal. Their quality appears to be exceptionally good. One 
observation only has been missed throughout the period considered. 
The instruments, and method of using them, will be found fully 
described in the same publications. 
The order in which the results appear is as follows :— 
Tables 1-12 give the daily mean temperatures and pressures of 
the air at Durban for the ten years 1888 to 1897 arranged in the 
following way :— 
Opposite each date in the first column will be found values of— 
M, the mean maximum temperature of the day ; 
m, the mean minimum temperature of the day ; 
M —m, the mean range of temperature ; 
Mi+m 
2 
, the mean of the readings of the maximum and minimum 
thermometers equal roughly to the mean temperature of the day ; 
M’, the highest temperature observed in the ten years upon the date 
of the same line ; 
m’', the lowest temperature observed in the ten years ; 
(M +), the number of times the maximum temperature has exceeded 
the mean maximum temperature of the day ; 
(M=), the number of times the maximum temperature has 
equalled the mean maximum temperature of the day ; 
