2 
IV.— Temperature of Nocturnal Radiation (on Grass). 
Stations. 
1 
Highest. 
Date. 
Lowest. 
Date. 
► 
Mean. 
Singapore, 
Penang, 
Province Wellesley, 
Malacca, 
°F. 
73-9 
76.0 
70.0 
74.0 
2 1 st April. 
9th May. 
1 oth Dec. 
1st Jul}'. 
°F 
6 3-3 
65.0 
68.0 
65.0 
10th July. 
26th Dec. 
1 7th Dec. 
22nd Dec. 
°F. 
70-3 
7°*3 
69.4 
7 ! -3 
V . — Rf.l ati v e Humidity. 
Stations. 
Highest. 
Date. 
Lowest. 
Date. 
Mean. 
Singapore, 
Penang, 
Province Wellesley, 
Malacca, 
% 
99 
100 
98 
100 
10th Dec. 
qth March. 
1st Dec. 
4th Jan. 
% 
54 
43 
56 
64 
28th April. 
15th Jan. 
1 7th Dec. 
14th Dec. 
% 
82 
81 
72 
86 
VI. — Wind. Direction and Velocity. 
Singapore . 
4. During January, February and March, North-East and North-West winds 
predominated, with frequent calms ; during April and May, the directions were prin- 
cipally North-West, West-North-West and West ; South-West prevailed during June, 
July and August; variables ( West, North-North-West, and North-West) blew during 
September, October and November; the North-East monsoon set in in December. 
5. Table shewing the wind directions in each month: — - 
January. 
February. 
March. 
April. 
May. 
June. 
jA 
Zj 
-a-> 
' 52 
bjo 
3 
September. 
October. 
November. 
-1 
Decern ber. 
NORTH. 
1 
> t t 
1 
I 
• • « 
10 
5 
NNE. ... 
m m m 
2 
1 
1 
1 
1 
2 
N E. 
3 ° 
16 
12 
4 
3 
* a • 
a ■ a 
« • * 
12 
3 * 
ENE. ... 
1 
• a • 
... 
• a ■ 
I 
1 
» * a 
. .. 
EAST. ... 
1 
* . . 
• a . 
3 
I 
I 
k a . 
a a • 
• a a 
■ • * 
ESE. 
, 
« • a 
I 
* * -a. 
a * • 
* « a 
• a a 
I 
SE. 
« • . 
* - 
I 
4 
2 
■ . . 
3 
I 
I 
S S E. 
... 
I 
4 
4 
I 
a • a 
a a a 
* * a 
* • a 
SOUTH. 
» • * 
I 
1 
I 
I 
5 
I 
2 
1 
• * * 
SSW. ... 
4 
4 
4 
7 
2 
5 
I 
9 
2 
a 
I 
s. w. 
* . . 
• • < 
» a ■ 
. . . 
, . . 
21 
3i 
27 
4 
. . . 
a . . 
a ■ % 
wsw. ... 
1 
4 
3 
5 
6 
4 
. . a 
1 1 
4 
* 
• • » 
WEST. ... 
3 
2 
a . . 
10 
9 
7 
12 
20 
20 
14 
6 
5 
WNW. .. 
6 
6 
12 
6 
6 
3 
2 
3 
7 
14 
5 
* * , 
N W. 
L 5 
14 
• J 5 
1 1 
27 
23 
19 
12 
] 2 
25 
J 9 | 
24 
NNW. ... 
6 
8 
9 
3 
1 
2 
3 
* a a 
2 
7 
1 
CALM. - 
26 
25 
21 
27 
33 
22 
20 
25 
24 
3° 
28 
24 
6. The mean velocity for the twelve months was 135 miles, and the greatest 
velocity in 24 hours was 193 miles, which was on the 4th December. 
Penang. 
7. The prevailing directions of the wind from January to June were North-East 
and North-West. During the latter half of the year North-West winds predominated. 
8. The mean velocity was 73 miles, and the greatest velocity in 24 hours was 
255 miles, which occurred on the 29th March. 
