118 
METEROLOGICAL REPORT. 
Sydney - , Month of September, 1857. 
From observations taken at 9 a.m. and 9 p-m, each day. 
2 
fcT 
Q> 
a 
o 
P. 
o 
m 
Barometer, Reduced, 
etc. 
Temperature of Air. 
Moisture. 
Cloud, 
Winds. 
Remarks 
on 
Weather, etc. 
3 
a 
c Ci 
a "3 
1 g 
Maximum. 
Minimum. 
Greatest 
Range. 
Dew point. 
1 Rain. 
Inches. 
3 
g 
g 
Form. 
Gene ral 
Direction 
1 
30-297 
53-0 
Cl.6 
49-3 
12-3 
50-2 
*61 
3 
Cu.-St. 
SE. 
Showery. 
2 
30134 
57-4 
GG-0 
41-0 
250 
53-4 
*00 
0 
Ci-St. 
NNE. 
Very fine. 
3 
29-814 
59-0 
733 
47-7 
25-6 
40-7 
*06 
6 
Ni. 
BW. 
War m wind. Sto rmy. 
4 
29-933 
53-2 
61-6 
401 
15*5 
35 9 
•00 
1 
Cu. 
SSW. 
i 
5 
30021 
541 
03-5 
420 
21-5 
42-6 
*00 
5 
Cu. 
SSW. 
> Very drv winds. 
68 
30-035 
50-3 
62 6 
41-3 
21*3 
42 6 
00 
1 
Cu. Ci. 
SW. 
J ' ' 
7 
29.980 
50-5 
626 
39-3 
233 
42-0 
*16 
G 
Cu.-St, 
SW. SE. 
Showers. 
8 
30-037 
46-1 
58-5 
42-0 
1G*5 
38-9 
•00 
1 
Cu. 
S. SE. 
) Cold. Heavy dews. 
9 
29-925 
50-1 
64-6 
34-5 
30-1 
13-2 
.00 
0 
SW. E. 
j Fine davs. 
10 
29*909 
54-4 
G7-.J 
40-7 
26-6 
47-9 
■00 
1 
Cu. 
North 
Calm and pleasant. 
11 
29-961 
54*5 
642 
40-7 
23-5 
49-5 
•01) 
6 
Ci.-St. 
Calm 
[lazy cloud. 
12 
29-917 
50 ’3 
61-2 
41*4 
19-8 
433 
•13 
0 
Cu.-St. 
South 
Showers. Dew. 
13S 
29*769 
53-0 
66-8 
39-4 
274 
43-9 
•00 
0 
SW. 
14 
29-870 
•19-7 
+t . 
353 
378 
•00 
2 
Cu. 
South 
y 1 me clear days. 
IS 
30-102 
■17-7 
58-1 
39-5 
18 6 
44-2 
•18 
5 
Cu. 
SSE. 
I Large clouds and 
16 
30-120 
-18-3 
G0-1 
39-3 
20-8 
46-7 
•32 
1 
Cu.-St. 
SE. 
[ showers of rain. 
17 
30-044 
55'G 
639 
36-7 
27-2 
61*0 
•08 
9 
Ci-.St. 
NNE. 
Cloudy. 
18 
29-985 
59-8 
09-8 
14.3 
25-5 
560 
•00 
2 
Cu. 
NE. 
Fine ^Eclipse). 
19 
29-858 
64-7 
75*2 
49-3 
25-9 
51-1 
•00 
4 
Ci.-St. 
NW. 
Hot wind. 
20S 
29*933 
501 
75 0 
53-0 
220 
441 
•00 
0 
Cu. 
wsw. 
1 Delightful weather. 
21 
29-908 
64*1 
76 5 
39-3 
37-2 
43-6 
•00 
O 
Cu. 
wsw. 
| Fresh, drv breezes. 
22 
30-059 
51-8 
71.0 
37-5 
33-5 
35-2 
•00 
0 
wsw. 
[ Sheet lightening on 
23 
30128 
5S-9 
08-5 
361 
32-4 
435 
.00 
5 
SW. SE. 
J 21st. 1 
24 
30-316 
52-8 
64-8 
52-2 
12-6 
404 
‘00 
4 
Cu. 
SE. 
) TV 1 
25 
30-319 
590 
70-4 
38-4 
32-0 
51-7 
•00 
0 
Cu. 
NE. 
V1 me days. 
20 
30-342 
58-2 
69*5 
433 
26*2 
550 
•00 
7 
Cu. 
S. E- 
Mists and dews. 
27S 
30*252 
59-8 
71-8 
46-5 
25-3 
57-5 
•00 
5 
SI. 
NNE. 
Misty morning. 
28 
30076 
66* 1 
758 
48-1 
27-7 
59-9 
•00 
6 
St. Ci.-St. 
Variable 
Sultry day. 
29 
29-880 
650 
SI-4 
57-4 
24-0 
54-0 
.00 
10 
Cu. Cu-St. 
w. s. 
“Southerly” squall. 
30 
29-995 
52*4 
028 
46-3 
16-5 
401 
•00 
1 
Cu 
South 
Fine, 
30 033 
55-3 
67-2 
,42-9 
24-0 
46*0 
1-54 
31 
Highest j of sin 
gle readings 
30-367 
70G 
81*4 
46-9 
60-5 
Cl 
10 
29 736 
400 
34-5 
34-4 
0 
Means and 
sums. 
30 033 
56-0 
GS*1 
44-8 
23-3 
47*8 
3-90;i 
14-1 
Averages of September, 1855, 1856. 
N.B.—The observations are 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 '631 inch, The 
mean gaseous pressure of dry air is 29*715 inches. 
Temperature of Air ,—The mean of all self-registered 
maxima and minima is 55 0 degrees. The adopted 
mean temperature of the month from all observations 
is, therefore, 55\2 degrees Fahrenheit. 
Moisture. —The dew-point is calculated from readings of 
Negretti'sand Zambra’s dry and wet bulb thermome¬ 
ters, by the use of Glauber's tables. 2nd Edn. 
The mean temperature of evaporation at 9 a.m. and 
9 p.m., is 50*8 degrees. The mean elastic force of 
vapour is 0‘31S inches. The average proportional 
humidity of the air is denoted by 73, perfectly ary 
air being taken as 0, and saturated damp air as* 100* 
Rain. —More or less rain fell on 7 days during the 
month. The total depth being 1*54 inches. It is 
collected at one foot above the ground, and measured 
at 9 p.m. 
Cloud. —The extent of cloud is express by the tenths of 
the whole skv covered bv it. 
The forms of clouds are denoted as follows, the num¬ 
ber of days on which each kind occurred during 
the month being added in figures. 
Cu. 
Ci. 
St. 
Cumulus 16 
Cirrus.1 
Stratus.2 
NL 
Ci -Cu. Cirro-cumulus. ... 0 
Ci.-St. Cirro-stratus . 5 
Cu -St. Cumulo-stratus ... 5 
Nimbus,... 6. 
Winds* —The winds may he thus summed up. 
NW 
2 
day 
SSE 
1 day 
West 
4 
it 
SE 
44 „ 
— 
East 
1 
AYS W 
3 
»» 
— 
S W 
34 
ESE 
2 „ 
SSW 
2 
NNE 
3 „ 
South 
44 
n 
North 
1 „ 
Calm 
1 
A r ariable 
1 .. 
By comparing the averages of this month with those 
of the same month of the last two years, as given in the 
lowest line of the table, it will be seen that this month 
has been a litte colder and a little drier than usual; 
the amounts of rain and cloudiness are considerably less, 
but the mean height of the barometer exactly the same. 
W. S. JEYONS. 
Double Bay, near Sydney, N.S.W. 
