280 
Dr Knox on the Climate of Southern Africa. 
TEMPERATURE,— F ahrenheit. 
Morning. 
Noon. 
Night. 
>> 
Mean. 
High- 
est. 
Low- 
est. 
Mean. 
High- 
est. 
Low- 
est. 
Mean. 
High- 
est. 
Low- 
est. 
Monti 
Mean 
1818, 
O 
O 
O 
O 
O 
O 
a 
! - 
59.27 
May, 
52.26 
70 
38 
69.64 
82 
52 
55.90 
74 
42 
June, 
45 
55 
36 
67 
75 
53 
49.38 
63 
44 
53.79 
July, 
45.42 
60 
34 
68.39 
79 
54 
51.80 
66 
41 
55.20 
Aug. 
46.5 
55 
36 
69.32 
80 
56 
51.71 
63 
40 
55.84 
Sept. 
52.96 
68 
24 
68.83 
88 
62 
57.8 
68 
45 
59.86 
Oct. 
53.17 
64 
40 
70.71 
88 
55 
43.28 
67 
47 
55.72 
Nov. 
58.86 
72 
48 
80.16 
95 
65 
64.86 
77 
58 
67.96 
Dec. 
61.5 
71 
52 
82.56 
95 
70 
65.96 
75 
58 
70.01 
1819, 
Jan. 
62.16 
72 
57 
83.6 
100 
75 
68.16 
75 
60 
71.30 
Feb. 
61.0 
75 
55 
79.14 
95 
58 
68.28 
78 
58 
69.46 
March, 
58.93 
66 
44 
74.58 
82 
63 
63.34 
75 
52 
64.28 
April, 
55.62 
71 
42 
73.75 
85 
53 
61.54 
75 
45 
63.63 
Annual 
Mean, 
54°. 45 
75° 
34° 
73° 97 
100° 
52° j 
58.°50 
00 
o 
^ 1 
o 
o | 
62°. 19 
General Annual Temperature, 62°.19, Fahrenheit. 
Remark . — The Mean for each month was calculated by adding together the tempera- 
tures of each day, and dividing the sum by the number of days in the month. 
The following table, shewing the state of the atmosphere as 
to pressure, was kept by the same very accurate observer, J. 
Ernst. I regret to say, that, from the appearance of the ba- 
rometer employed, I should deem a confirmation of the correct- 
ness of these observations necessary, by means of a better in- 
strument. 
Barometrical Pressure. 
Number of Rainy days 
throughout the year. 
1818, 
Mean. 
Highest. 
Lowest- 
Days. 
May, - 
27,69 
28 
27,38 
5 
June, - 
27,75 
28,8 
27,43 
2 
July, 
27,75 
28 
27,50 
0 
August, 
27,68 
28 
27,36 
4 
Storm, 4 days. 
September, 
27,75 
28 
27,50 
1 
October, 
27,74 
28 
27,48 
10 
November, 
27,62 
27,80 
27,45 
7 
December, 
27,57 
27,75 
27,40 
8 
Storm, 2 days. 
1819, 
January, 
27,60 
27,80 
27,40 
9 
Storm, 4 days. 
February, 
27,62 
27.80 
27,45 
20 
Storm, 1 day. 
March, 
27,71 
27,90 
27,52 
7 
J April, - 
27,32 
27,49 
27,15 
3 
J Inches, 
27,68 
An. Mean. 
76 
11 
