ABSTRACT of the METEOROLOGICAL JOURNAL kept on board His Majesty’s Ship Hecla, 
during the Month of May, 1820 . 
Day 
Temperature of Air 
in shade. 
Barometer. 
Prevailing Winds. 
Prevailing Weather. 
Maxi- 
mum. 
Mini- 
mum. 
Mean. 
Maxi- 
mum. 
Mini. 
mum. 
Mean. 
l 
-17 
o 
0 
o 
+ 8.58 
inches. 
30.48 
inches. 
30.31 
inches. 
30.342 
North. 
Strong gales to moderate and cloudy. 
2 
+ 11 
- i 
6.25 
30.46 
30.39 
30.418 
North. 
Strong breezes and fine. 
3 
+ 15 
+ 2 
9.25 
30.42 
30.39 
30.403 
f North. > 
l N.W. 5 
Moderate and fine. 
4 
+ 16 
0 
7.67 
30.41 
30.38 
30.398 
N.N.W. 
Moderate and fine. 
5 
+ 20 
+ 2 
11.58. 
30.36 
30.26 
30.312 
North. 
Fresh breezes with drift. 
6 
+ 8.5 
- 2 
3.83 
30.24 
30.09 
30.155 
N.N.W. 
Strong breezes and fine. 
7 
+ 5 
- 4 
0.79 
30.06 
29.98 
30.007 
N.N.W. North. 
Moderate and fine. 
8 
+ 8 
- 2 
3.00 
29.99 
29.98 
29.982 
North. 
Fresh breezes and fine. 
9 
+ 9 
-- 1 
4.67 
30.03 
29.93 
29.985 
North. 
Ditto. ditto 
10 
+ 10 
+ 1 
5.62 
30.07 
30.00 
30.027 
North. 
Ditto. ditto. 
11 
+ 10 
— 1.5 
4.17 
30.14 
30.08 
30.113 
North. 
Ditto. ditto. 
12 
+ 18 
- 1 
8.62 
30.19 
30.15 
30.168 
North. 
Light breezes and cloudy. 
13 
+ 17 
- 1 
7.62 
30.34 
30.19 
30.262 
N.W. 
Ditto. ditto. 
14 
+ 17 
- 3 
7.50 
30.41 
30.36 
30.393 
Calm. , 
Fine clear weather. 
15 
+ 19.5 
- 1 
9.42 
30.38 
30.26 
30.317 
Calm. 
Ditto. ditto. 
16 
+24 
- 2 
12.67 
30.23 
30.19 
30.200 
Calm. 
Hazy weather. 
17 
+ 29 
+ 7 
18.50 
30.24 
J50.21 
30.228 
( North. ) 
l N.W. 5 
Light breezes and hazy. 
18 
+ 24 
+ 10 
18.00 
30.31 
30.23 
30.272 
N.W. 
Light breezes and fine. 
19 
+ 25 
+ 10 
17.75 
30.27 
30.24 
30.258 
North 
Ditto ditto. 
20 
+ 25 
+ 10 
16.96 
30.20 
30.10 
30.160 
South. 
Ditto ditto. 
21 
+ 29 
+ 6 
18.83 
30.11 
20.99 
30.025 
South. 
Ditto ditto. 
22 
+ 32 
+ 12 
23.00 
30.21 
30.02 
30.102 
South. 
Ditto ditto. 
23 
+ 34 
+ 20 
27.29 
30.30 
30 00 
30.193 
North to S.S.E. 
Moderate breezes and cloudy. 
24 
+ 33 
+ 25 
32.71 
30.12 
29.75 
29.893 
E.S.E. 
Fresh breezes and cloudy. 
25 
i- 40.5 
t32 
36.33 
29.99 
29.74 
29.870 
N.W. 
Moderate and cloudy. 
26 
+ 36.5 
+ 30 
33.04 
30.20 
30.00 
30.122 
( S.S.E. by West 1 
\ to N.N.W. ] 
Light winds and fine. 
27 
+ 47 
+ 32.5 
39.17 
30.02 
29.93 
29.982 
South. 
Light breezes and cloudy. 
28 
+ 37 
+ 33 
34.96 
29.81 
29.27 
29.582 
East. 
Moderate and cloudy with rain, hail and snow. 
29 
+ 33 
+ 24 
26.54 
29.60 
29.25 
29.403 
N.W. 
Strong gales and heavy drift. 
30 
+ 38 
+ 24 
31.08 
29.96 
29.71 
29.853 
N.N W. to W.N.W. 
Fresh breezes and fine. 
31 
U 35 
+ 27 
30.92 
29.98 
29.89 
29.933 
N.E. 
Moderate and hazy with small snow. 
+ 47 
- 4 
+16.66 
30.48 
29.25 
30.109 
• 
