ABSTRACT of the METEOROLOGICAL JOURNAL kept on board His Majesty’s Ship Hecla, at Sea, 
daring the Month of July, 1819. 
Temperature 
of Air 
Sea Water at the 
in shade 
surface 
Day 
! Prevailing Winds. 
Prevailing Weather. 
Maxi- 
mum. 
Mini- 
mum. 
Mean. 
Tempe- 
rature. 
Specific 
Gravity. 
Tempera- 
ture when 
weighed. 
Maxi- 
mum. 
Mini- 
mum. 
Mean. 
+ 
+ 1 
inches. 
O 
o 
1 .0260 
O 
inches. 
inches. 
1 
39 
34 
36.33 
33.2 
53 
29.83 
29.78 
29.800 
w.s.w. 
Moderate breezes and fine. 
2 
37.5 
35.5 
36.25 
33.3 
1.0.: 60 
53 
29.78 
29.70 
29.753 
s.w. 
Ditto ; 
3 
35 
30 
33.33 
31.5 
1.0260 
53 
29.61 
29.10 
29.302 
S.E. 
Moderate and cloudy. Snow and rain | 
1.0261 
54 
at times. 
4 
33 
30.5 
31.58 
30 
29.42 
29.35 
29.387 
Calm 
Occasional light airs from the northward. 
1.02G0 
54 
Foggy weather. 
5 
33 
29 
30.83 
30.8 
29.48 
29.35 
29.403 
West 
Light breezes and hazy. 
C 
38 
31. 
34.42 
33.1 
1.0253 
57 
29.54 
29.42 
29.505 
S.W. 
Light breezes and fine. 
7 
46 
34 
39.83 
35.8 
1.0257 
57 
29.59 
29.51 
29.550 
$ A.M. S.S.E. 
Light airs and fine. 
( P.M. Calm 
Fine weather. 
8 
40 
34 
37.75 
37.2 
1 .0260 
57 
29.68 
29.60 
29.629 
North 
Light airs and cloudy. 
9 
34 
30 
32.25 
32.7 
1.0254 
54 
29.74 
29.69 
29.721 
N.N.E. 
Light airs and cloudy, with snow. 
10 
32 
28 
30.00 
31.5 
1.0252 
53.5 
29.80 
29.75 
29.7S7 
N.N.W. 
Light breezes and foggy 
11 
32 
26 
29.50 
30.8 
1.0256 
51 
29.77 
29.73 
29.701 
N.W. 
Ditto. 
12 
33.5 
28 
30.50 
32.1 
1.0252 
54 
29.66 
29.63 
29.637 
N.N.W. 
Moderate breezes and foggy. 
13 
32 
31 
31.67 
33.2 
1.0256 
55 
29.90 
29.72 
29.829 
f A.M. N.N.W. ? 
1 P.M. Westerly, j 
Light breezes and foggy. 
14 
36.5 
28.5 
32.83 
34.2 
1.0256 
55 
29.90 
29.84 
29.878 
S.S.E. 
Ditto 
15 
31 
28 
29.83 
32.5 
1 .0250 
58.5 
29.91 
29.81 
29.875 
N.b.W. 
Light breezes and hazy. 
16 
36 
27 
33.00 
34.2 
1.0255 
59 
29.90 
29.76 
29.852 
S.S.E. 
Light breezes and cloudy. 
17 
34 
31 
33.50 
32.8 
1.0217 
58 
29.84 
29.71 
29.783 
West 
Light breezes and foggy, with rain. 
18 
33 
30.5 
32.00 
32.1 
1.0247 
56 
29.90 
29.79 
29.827 
5 A.M. S.W. 1 
? P.M. N.N.E. j 
Light breezes and foggy, with snow. 
19 
34 
29 
31.00 
33 
1.0247 
56 
29.93 
29.90 
29.912 
North 
Light breezes and foggy, with small snow. 
20 
30 
27 
28.50 
32.2 
1.0250 
56 
29.84 
29.70 
29.791 
N.N.W. 
Light breezes and foggy. 
21 
42 
27 
37.67 
33.8 
1.0243 
58 
29.63 
29.56 
29.588 
5 From north round i 
( by easttoS.E.bE. 5 
Light airs; occasional calms. 
22 
45 
34 
39.75 
33 
1.0183 
58 
29.62 
29.58 
29.605 
East 
Light airs and fine clear weather. 
23 
36 
29 
31.50 
31.4 
1.0252 
55 
29.70 
29.62 
29.665 
N.W. b. W. 
Light breezes and foggy. 
24 
37 
31 
33.75 
31.4 
29.83 
29.60 
29.759 
N.N.W. 
Light airs and foggy. 
25 
40 
32 
35.42 
31.3 
29.89 
29.84 
29.870 
Westerly. 
Light breezes and fine clear weather 
26 
35 
28 
32.33 
31.9 
1.0185 
59 
29.85 
29.82 
29.838 
: S.b 
Light breezes and foggy weather. 
27 
35 
33 
33.75 
32.0 
29.90 
29.74 
29.842 
S.E. b.E. 
Moderate breezes and hazy weather. 
28 
33 
33 
33.00 
31.7 
1.0240 
59 
29.71 
29.53 
29.615 
S.E. b.S. 
Fresh breezes and hazy, with continued 
1.0242 
59 
heavy rain. 
29 
37 
33 
34.25 
33.1 
29.52 
29.49 
29.507 
East 
Fresh breezes and foggy, with rain at 
53 
times. i 
30 
38 
133 
36.25 
'34.8 
1.0255 
29.54 
29.51 
29.525 
N.N.W. 
Fresh breezes and fine. 
31 
43 
35 
37. 08 
32.6 
1.0250 
55 
29.51 
29.50 
29.505 
N.W.b.W. 
Ditto. 
46 
26 
33.54 
32.68 
| 29.93 
29.10 
29.687 
