241 
METEOROLOGICAL REPORT. 
Stdxey, Month of March, 1858. 
From observations taken at 9 a,m. and 9 p,m 9 each day. 
March, 1858. | 
Barometer, Re¬ 
duced &c. 
Temperature of Air. 
MoiBTCIiK. 
rt 
a 
.a 
02 
Cloud, 
Winds. 
Remarks 
on 
Weather, etc. 
Ojg 
w a s. 
| 
Scs'x 
o 
a 
p* 
B 
S 
a 
=1 
c 
a i 
*3 i 
o 
tQ 
$ 
w 
£ 
O 
P* 
£ 
a 
Q 
A 8 
3*3 
o 
* 
H 
a 
£ 
So 
2 “ 
§ | 
1 
% 
3 
4 
5 
6 
73 
8 
9 
10 
11 
12 
13 
14S 
15 
16 
17 
18 
19 
20 
21S 
22 
23 
24 
25 
26 
27 
2SS 
29 
30 
31 
30103 
•126 
■225 
■158 
•190 
.277 
■188 
29- 939 
■78) 
■914 
30- 177 
•338 
•470 
•440 
■330 
163 
29950 
•9S3 
30-062 
29- 964 
•991 
30- 094 
•2-35 
•176 
29- 972 
•881 
30- 043 
■194 
•236 
•150 
•115 
66- 9 
70-1 
679 
67'3 
70-7 
660 
66-2 
641 
691 
68-1 
70-3 
70- 8 
71*2 
71- 5 
71-5 
69-3 
720 
693 
63-4 
68-0 
73-0 
63- 7 
64- 4 
62- 4 
65*7 
67- 1 
68- 7 
67*3 
64-7 
63- 0 
66-9 
761 
76-4 
75*8 
78- 3 
79- 3 
79-0 
79- 1 
76-4 
78- 8 
80- 3 
76-8 
79- 2 
790 
79- 0 
80- 8 
796 
80- 5 
76-8 
73- 1 
80-8 
81- 9 
72.8 
70- 2 
67-8 
74- 8 
76-8 
71- 5 
73*5 
73- 3 
74- 5 
780 
59-3 
57.3 
62-6 
56- 3 
54- 3 
57- 3 
568 
63-7 
49- 6 
55- 3 
63- 3 
02-5 
66-3 
583 
64- 3 
65- 3 
53- S 
62-3 
61-8 
52-3 
583 
633 
593 
5S-8 
59-3 
573 
58 3 
59-8 
57-2 
54- 3 
50- 3 
16-8 
191 
13-2 
220 
250 
21- 7 
22- 6 
12- 7 
on.o 
25- 0 
13- 5 
16-7 
12- 7 
20-7 
16-5 
24-3 
26- 7 
14- 5 
11-3 
28-5 
236 
9-5 
10-9 
9-0 
15- 5 
19- 5 
13- 2 
13-7 
16- 1 
20- 2 
27- 7 
6.3-8 
640 
630 
615 
63*3 
59-5 
57'S 
56- 0 
59- 2 
63- 2 
04-2 
64- 8 
57- 6 
57-3 
61-5 
63- 2 
64- 3 
61- 3 
56.8 
62- 5 
62- 9 
590 
52-5 
60- 2 
63- 4 
611 
59-3 
56-6 
53"4 
56-0 
62-4 
•54 
•oo 
1-22 
•06 
0 
■o 
.0 
0 
-0 
■03 
03 
•12 
■0 
•o 
•02 
*0 
*0 
•O 
•0 
0 
*0 
•03 
•10 
•37 
•26 
•0 
•90 
•0 
•o 
•o 
•o 
104 
102 
105 
108 
113 
116 
116 
115 
116 
114 
101 
109 
107 
111 
no 
116 
115 
101 
93 
115 
119 
78 
80 
70 
103 
107 
103 
9c 
101 
9£ 
Ilf 
5 
6 
4 
0 
0 
3 
3 
5 
0 
6 
4 
6 
3 
8 
5 
5 
O 
5 
6 
0 
8 
10 
6 
10 
6 
4 
8 
4 
I 2 
1 2 
1 0 
Ou.-Ni. 
Ni. 
Cu. 
Cu.-Ci. 
On. 
Cu. 
Cu. 
Ci. 
Ni.-Ci.-St. 
Ci.-Cu. 
Ci.-Cu. 
Cu. 
Cu. 
Cu. 
Cu. 
Cu. 
Cu. 
Cu. 
Cu. 
Ci.-Cu.-Ni 
Cu.-Ci.-St. 
Ni.-Ci. 
Ni.-Cu. 
Cu.-Ni. 
Cu. 
Cu. 
Ci. 
NE. 
S.SE. 
SE. 
E.NE. 
NE. 
NE. 
NE. 
NE. 
NE. 
NE. SE. 
SE. 
ENE. 
East. 
ENE. 
NE. 
NE. 
NE. 
SSE. 
SSE. 
NNW.NE. 
NE. 
South. 
SSE. 
East. 
NE. 
Variable. 
SSE. 
SSE. 
SSE. 
S8W. 
NE. 
)ark and showery. 
Partial thunderstorm, 
leavy showers. 
L^'ine. 
Cloudless tranquil 
* weather, prevail¬ 
ing dews at night. 
Thundercloud. 
1 Considerable cloud, 
f with light showers, 
f Much cumulus and 
f strong sea breezes. 
Jloudless and windy. 
V Cumulus or scud 
Cloudless. 
Calm and warm. 
Gale. 
Showers. 
Threatening. 
Thundercloud. 
Partial thunderstorm. 
Heavy showers. 
} Large distinct cu- 
J mull. Fine. 
Dew and mist. 
Very fine. 
30-476 
74-3 
81-9 
32-3 
66*5 
1-22 
119110 
Highest ) ofs 
ingle readings. 
29-755 
56-7 
49-6 
... 
511 
... 
0 
Lowest J at 9 a,m. or 9 p.m. 
30125 
67-8 
76-8 
58-4 
18-4 
60-5 
3T4 
4-3 
Means and sums 
March, 1858. 
30-1IO 1 
68-4 
76-8 
59 8 
17-0 
62-5 
415 
5' 6 
Means and sums. March, 1856,1857. 
N.B.—The observations are not corrected for dinraal 
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 *7—1 inches. 
The mean gaseous pressure of drv air is 29*597 
inches. The average weight of a cubic foot of atmos¬ 
pheric air is 527 grs. 
Temperature of Air y —The mean of all self-registered 
maxima and minima is 67'6 degrees. The adopted 
mean temperature of the month is, therefore, 67.7 
degrees Fahrenheit. 
Moisture .—The dew-point is calculated from readings of 
Negretti’sand Zam bra's dry and wet bulb 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 63*7 degrees. The mean elastic force of 
aqueous vapour is '528 inch.. The average ^propor¬ 
tional humidity of the air is denoted by 77, per¬ 
fectly dry air being taken as 0, and saturated damp 
air as 100. 
Rain .—More or less rain fell on 12 days during the 
month. The total depth being 3.£ 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 4*69 inches. 
Sun's heat is indicated for each day by the highest read¬ 
ing (self-registered) of a thermometer with a 
blackened bulb placed ono 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 frrms of clouds are denoted as follows, the num¬ 
ber of days on which each kind occurred being 
added in figures. 
Cu. Cumulus 22 Ci.-Cu. Cirro-cumulus. ... 0 
Ci. Cirrus.6 Ci.-St. Cirro-stratus . 2 
St Stratus.0 Cu.-St. Cumulo-stratus ... 0 
Ni. Nimbus, ...7 
Winds .—The winds may be thus summed up. 
NNW. 
days. 
SSE 
7 days 
SSW. 
1 
SE 
24 „ 
SSW. 
1 
South 
1 
East 
2 „ 
ENE 
3 „ 
Var. 
1 
.. 
NE 
13 „ 
W. 
S. JEVONS. 
Double Bay, 
near 
Sydney, 
N.S.W. 
