158 
METEROLOGICAL REPORT. 
Svd.yev, Month of November, 1857- 
From observations taken at 9 a.m. and 9 p.m. each day. 
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CO 
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Temperature op Air. 
Moisture. 
Cloud, 
G 
Winds. 
Remarks 
on 
Weather, etc. 
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2 
3 
4 
5 
6 
7 
8 S 
9 
10 
11 
12 
13 
14 
15S 
16 
17 
18 
19 
20 
21 
22S 
23 
24 
25 
26 
27 
28 
29S 
30 
29-817 
30070 
•305 
•234 
•015 
■002 
.091 
•079 
•047 
29- 81' 
•983 
•897 
•56S 
•847 
•859 
•905 
30- 006 
•028 
•072 
•116 
29-790 
•892 
•7G3 
•870 
30T55 
•141 
•090 
083 
•181 
•270 
58-6 
61- 5 
62- 6 
67-1 
67-0 
09T 
67-9 
70-9 
704 
70-6 
65-5 
65- 5 
7o-4 
576 
676 
61-9 
63-7 
66- 5 
67'5 
670 
072 
70-1 
C8-2 
63- 7 
57-0 
67- 1 
73-8 
07.8 
64- 9 
63-8 
72.2 
67-5 
70- 8 
74-7 
784 
76 7 
750 
81-1 
812 
82-8 
72-8 
691 
78-2 
72-0 
80-6 
780 
710 
80-8 
77-5 
739 
81 5 
77- 9 
78- 8 
69-2 
67-3 
74-8 
87-8 
79- 0 
71- 8 
72- 4 
41-3 
43-0 
530 
54- 5 
58-0 
67T 
60- 7 
63-6 
531 
57- 5 
CO-3 
58- 4 
58-3 
51- 3 
41-3 
52- 4 
41- 3 
47- 5 
54.4 
55- 4 
616 
55-1 
61- 3 
490 
48- 3 
42- 4 
475 
58-6 
57- 4 
58- 8 
30-9 
24o 
17-8 
20-2 
20- 4 
19-6 
14-9 
17- 5 
28-1 
25-3 
12- 5 
10-7 
19-9 
21 - 6 
39- 3 
25-6 
30-3 
33-3 
231 
18- 5 
19- 9 
22-8 
17-5 
20 - 2 
19- 0 
32-4 
40- 3 
20- 4 
14-4 
13- 6 
49- 4 
51-5 
55- 2 
56- 7 
59- 3 
60- 1 
59-5 
64-3 
64-4 
63- 9 
59- 5 
61-2 
500 
41-3 
48-6 
43-2 
47-5 
57- 3 
60- 3 
59- 9 
G2'2 
60- 6 
64- 7 
47-6 
470 
56-6 
61- 2 
600 
56-8 
50- 0 
■00 
■00 
■03 
■00 
00 
•00 
.00 
■00 
•00 
•oo 
15 
•24 
.33 
•00 
•00 
‘00 
•00 
•oo 
•00 
•oo 
•04 
•00 
•66 
05 
•00 
•00 
•oo 
f 
■00 
1 
9 
l 8 
8 
4 
1 
0 
1 
10 
10 
0 
0 
0 
0 
0 
0 
2 
10 
0 
4 
5 
5 
2 
0 
0 
5 
10 
9 
Cu. Cu-St. 
Cn. 
Cu. 
Cu. 
cs. 
Cu. 
Cu. 
Cu. 
Ci. 
Ci. 
Cu -Ni. 
Cu.-.\i. 
Cu. Ni. 
c;.-st. 
Ci.-St. Cu. 
Cu. 
Ci.-St 
Ci. 
Cu-St. Ni. 
Cu. 
Cu. 
Ci. 
Cu. Ci.-St. 
Cu. 
Cu. 
8£ 
3f 
107 
mr 
139 
ISO 
120 
130 
130 
138 
50 
11 
107 
112 
33 
123 
L1G 
137 
04 
28 
132 
113 
49 
46 
40 
138 
148 
128 
38 
66 
wsw. 
South 
SB. 
NE. 
NE 
NE. SE. 
NNE. 
N.E 
NE. 
NE. 
SSE. 
NE. 
West 
SW. 
NE. 
SSW. 
NE. 
NE. 
SE. 
it-:. NNE. 
NE. 
S. NE. 
NE. SW. 
South 
SSE. 
NE. 
NE. SSE. 
NE. SSE. 
SE. 
SE. NE. 
Fine. 
Strong dry winds. 
Very agreeable 
weather. 
Light clouds and 
moderate sea 
breezes. 
lam and thunder, 
lark clouds, 
showers. 
)ry winds. 
Sheet lightning 
| Very fine weather. 
Sultry* 
Equally winds. J ‘ 
’errific squall, 
strong winds. 
"ine. 
| Warm sunny weather 
lloomy. t 
Cloudy. 
30 309 
29-541 
79-5 
510 
87-8 
4i-3 
46-5 
65-4 
40-0 
10 
0 
Hi 
Lc 
ghest 1 of single readings 
west J at 9 a,m. or 9 p.m. 
30 000 
66-0 
75-9 
53-4 
22-5 
56-2 
1-51 
•36 
Means and. sums. November, 1857. 
29-936 
04-8 
75*0 
535 
21-5 
54-4 
6-09 
•58 
Means of November, 1855,1856. 
N. 
B —The observations are not corrected for diurnal j Evaporation .—The total depth of waterevaporated vjth 
’ _ . . . . i i . *V.l l nTTinoi.m crni iind Ytl v\ r* la •V r \ I 7TW'hpS 
range The principal instruments have been compared i 
at "Greenwich, and the readings are all reduced ac¬ 
cordingly. 
Pressure .—The haiometer is 11 feet above the sea-level 
the greatest range of pressure is *768 inch. The 
mean gaseous pressure of dry air is 20*547 inches. 
The average weight of a cubic foot of air is 527 gra. 
Temperature of A ir .—The mean of all self-registered 
. maxima* and minima is C4*7 degrees. The adopted 
mean temperature of the month is. therefore, 65*3 
degrees. The adopted mean temperature of the month 
for the two previous years is 64’6 degrees. 
Moisture .—The dew-point is calculated from readings of 
Negretti’sand Zamhra’s dry and wet bulb thermome¬ 
ters, by the use of Glaishor’s tables. 2nd Edn. 
The mean temperature of evaporation at 9 a.m. and 
9 p.m , is 00'5 degrees. The mean elastic force ot 
vapour is '453 inch. The average proportional 
humidity of the air is denoted by 71, perfectly dry 
air being tahen as 0, and saturated damp air as 100. 
Main .—More or less rain loll on 8 days during the 
month. The total depth being 1*51 inches. It is 
collected at one loot above the ground, and measured 
at 9 p.m. 
'full exposure to sun and wind is 5*51 inches 
Omitting four days. 
Sunshine .—The numbers ie the eleventh, column denote 
roughly the proportional total amounts of sun’s 
heat fallen during each day, as measured by the 
sun-gauge described in the Sydney Magazine for 
August. 
Cloud—The extent of cloud is expressed by the tenths 
of the whole shy covered by it. 
The forms of clouds are denoted as follows, the num¬ 
ber of days on which each hind occurred during 
the month being added in figures. 
Cu. Cumulus 17 ~ Ci -Cu. Cirro-cumulus. ... 0 
Ci. Cirrus. 
..5 Ci.-St. Cirro-stratus . 4 
St. Stratus. 
.0 Cu -St. Cumulo-stratus ... 2 
Ni. Nimbus,...!. 
UTVwfo.—The winds may be thus summed up. 
West 
1 dav [ S hi 
3 days. 
— 
SE 
4J- 
»» 
wsw 
1 „ 1 - 
s w 
li „ NE 
14 „ 
ss w 
T „ NNE 
H „ 
South 
2i „ 1 
W. £ 
!. JEVONS. 
Double Bay, near 
Sydney, N.S.W. 
