221 
METEOROLOGICAL REPORT. 
Sydney, Month of February, 1858. 
From observations taken at 9 a.m. and 9 p.m . each day. 
00 
00 
X 
rt 
a 
-o 
o 
Barometer, Re¬ 
duced &c. 
Temperature of 
Air. 
Moisture. 
Cloud, 
Winds. 
Remarks 
on 
Weather, etc. 
o E 
d £3 C 
g rfCi 
So'g 
a 
5 
a 
a 
‘U 
■rt 
£ 
a 
0 
5 
'a 
3 
© 
to 
a 
rt 
W 
13 
*o 
£ 
Zj 
Q 
.5 8 
rf *a 
« a 
>—1 
© 
w 
"a 
a 
m 
a 
o 
« 
H 
a 
u 
o 
r-7 a 
ci o 
o -g 
£3 O 
a •-> 
1 
2 
3 
4 
5 
6 
Th 
8 
9 
10 
11 
12 
13 
14S 
15 
1G 
17 
18 
19 
20 
21S 
22 
23 
24 
25 
26 
27 
2SS 
29-555 
•705 
•592 
•662 
■920 
30.073 
■149 
•193 
-090 
•192 
•205 
•141 
•0S6 
•127 
•141 
T75 
•215 
•212 
•oso 
29- 997 
30- 208 
•063 
29- 920 
•940 
30- 225 
•265 
•292 
•249 
69- 1 
72-S 
590 
65-3 
70- 6 
71- 2 
70-6 
65-5 
72.0 
72- 4 
74-7 
73T 
74- 6 
73- 3 
S'! -5 
72-5 
72-8 
75- 3 
74- 9 
720 
68-0 
72- 0 
73- 4 
67'o 
65-2 
62-9 
67-4 
66*5 
76- 7 
83-8 
66-5 
730 
S6-9 
83-5 
80- 5 
74-2 
80-1 
82- 5 
81- 5 
83- 4 
840 
83-5 
79-8 
so-c 
835 
83-5 
82- 8 
80S 
75 0 
83.5 
rs-8 
86-2 
73-6 
77- 3 
77-6 
77-2 
C0-3 
64.3 
59-3 
49-3 
62-0 
54- 3 
55- 3 
Cl-7 
55 -3 
67-3 
55-3 
5S-3 
59-3 
58-3 
54-3 
54- 3 
63-5 
61-2 
57-3 
618 
03-0 
63-3 
67'5 
66-3 
506 
52-3 
53 3 
55- 8 
16-4 
19‘5 
7-2 
23- 7 
24- 9 
29-2 
25- 2 
12-5 
24- 8 
1.5-2 
26- 2 
25- 1 
24- 7 
25- 2 
255 
26- 3 
200 
22- 3 
25-5 
22-0 
12-0 
20-2 
11-3 
19-9 
23- 0 
25-0 
24- 3 
184 
63-4 
65-2 
56-2 
47-9 
53-3 
61-6 
60-0 
55-0 
62-8 
59-0 
59-2 
62-1 
640 
630 
60 0 
61 -5 
cr-7 
65*5 
63.6 
61-2 
65- 6 
69-1 
60 9 
57-6 
55-2 
57'9 
64-7 
•00 
•12 
•26 
•00 
•00 
•00 
.00 
•04 
•00 
•00 
00 
•oo 
•00 
■00 
•00 
•00 
•06 
•oo 
•00 
•10 
•00 
•00 
•22 
•17 
•00 
•oo 
•00 
•34 
IOC 
117 
69 
107 
123 
119 
122 
97 
111 
123 
118 
121 
120 
118 
124 
114 
21 
121 
118 
123 
122 
111 
114 
106 
114 
104 
101 
10 
8 
10 
1 
0 
0 
7 
6 
3 
2 
2 
7 
4 
3 
1 
2 
3 
0 
0 
9 
10 
8 
8 
4 
9 
5 
8 
5 
Cu. 
Cu.-Ni. 
Ni. 
Cu. 
Cu. 
Cu. 
Cu. 
Cu. 
Cu.-Ci. 
Cn.-Ci.-St. 
Cu.-Ci.-St. 
Cu. 
Cu. 
Cu. 
Cu.-Cu.-St. 
Haze. 
Ni.-St. 
_ Cu. 
7s i.-Haze. 
Cu.-Ci.-St. 
St.-Ni. 
Cu. 
Cu.Ci.-St. 
Cu. 
Cu. 
NE. 
Yar. S. 
SSW. 
WNW. 
NW. NE. 
NE. 
SE. 
S.SE. 
NE. 
E.NE. 
NE. 
NE. 
NE. 
NE. 
ESE. 
SE. 
NE. 
NE. 
NNE. 
SSE. 
SE. 
NE. 
NNE. 
NE. South 
ESE. 
East. 
ESE. 
SE. 
Dark and hazy. 
Thunderstorm. 
Windy, cloudy, & rainy. 
Cool air. 
Light warm wind. 
Cloudless. 
| Dark clouds. 
Warm and dry, but 
agreeable weather. 
Light sea-breezes 
and detached 
cumuli. 
1 Large showery 
j cumuli.. 
1 Strong disagreeable 
j winds. 
‘ Southerly." 
Sloomy, 
Tiunderstorm. 
Sultry. 
‘ Southerly." 
I Fine and cool. Much 
j cumulus. 
Showers. 
30-306 
8r-3 
86-9 
37-6 
71-2 
•34 
124 
10 
Hie 
hest ) of si 
ngle readings. 
29-569 
536 
493 
0 
45-8 
69 
0 
Lowest J at 9 
a.m. or 9 p.m. 
30 074 | 
70-2 
80-2 
59-0 
21-2 
608 
1-31 
113-48 
Means 
and sums. 
February, 1858. 
30 022 1 
70 0 | 
79-2 1 
61-6 1 
17-6 1 
62-4 
4-50 | 
64 
Means 
&c., of February, 1856, 1857- 
N.B.—The observations arc not corrected for diurnal 
range The principal instruments have been compared 
at 'Greenwich, and the readings are all reduced ac¬ 
cordingly. 
Pressure .—The barometer is 11 feet above the sea-level 
The greatest range of pressure is '737 inches, 
The mean gafeons pressure of dry air is 29;541 
inches. The average weight of a cubic foot of air is 
524 grs. 
Temperature of Air ,—The mean of all self-registered 
maxima and minima is 69*6 degrees. The adopted 
mean temperature of tlio month is, therefore, 69.9 
degrees Fahrenheit. The adopted mean of the same 
month for the last two years is 70*2 degrees. 
Moisture .—The dew-point is calculated from readings of 
Kegrettrs and Zamhra’s dry and wet bull) thermome¬ 
ters, by the use of Glaisher’s tables. 2nd Edn. 
The mean temperature of evaporation at 9 a.m. and 
9 p.m ,is GTS degrees. The mean elastic'force of 
aqueous vapour is a33 inch. 9he average propor¬ 
tional humidity of the air is denoted by 71, per¬ 
fectly dry ail' being taken as 0, and saturated damp 
air as 100. 
Main .—More or less rain fell on 8 days during the 
month. The total depth being 1’31 inches. It is 
collected at one foot above the ground, and measured 
at 9 p.m. 
Evaporation .—The total depth of water evaporated with 
full exposure to sun and wind is 5*72 inches 
during 27 days. 
Sun's heat is indicated for each day by the highest read¬ 
ing (self-registered) of a thermometer with a 
blackened bulb placed one inch above the surface of 
the ground. 
Cloud-—The extent of cloud is expressed by the tenths 
of the whole sky covered by it. 
The forms of clouds are denoted as follows, the num¬ 
ber of days on which each kind occurred being 
added in figures. 
Cu. Cumulus 20 CL-Cu. Cirro-cumulus. ... 0 
Ci. Cirrus.1 Ci.-St. Cirro-stratus ...... 4 
St. Stratus.2 Cu.-St. Cumulo-stratus ... 1 
Hi. Nimbus, ...5 Haze ... 2 
Winds .—The winds may be thus summed up. 
NW. 
1 daps. 
SSE 
1 days 
WNW. 
1 „ 
S E 
a „ 
— 
E »S E 
i „ 
SSW. 
1 „ 
East 
i „ 
South 
n .. 
ENE 
1 „ 
Yar. 
i 
NNE . 
NE 
ii .. 
w. s. 
JEY0NS. 
Double Bay, near Sydney, H.S.W. 
