170 
Dr. Marcet on the specific gravity and temperature 
Table II. Specific Gravities of Sea Waters. 
Nos. of 
Specimens. 
Latitude. 
Longitude. 
Specific 
Gravity. 
17 
^3’49 
55, 3 8W 
1026,7 
18 
59.40 
14,46 
1030,04 
1 9 
56,22 
— 
1026,56 
20 
54.0 
4,30 
1026,8 
21 
53*45 
0,20 
1026,7 
22 
52.45 
4,0 
1021 , 75 * 
2 3 
48,25 
6,34 
1030,02 
24 
46,0 
48,0 
1026,48 
2 5 
45 2 0 
45,10 
1028,16 
26 
45,10 
15,0 
1029,34 
27 
25,30 
32,30 
1028,86 
28 
22,0 
89 , oE 
1020 , 28 * 
29 
13,0 
74,0 
1027,72 
3° 
10,50 
24 , 26 W 
1028,25 
3i 
7,0 
8 c,E 
1030,9 
3 2 
4,0 
23 , W 
1027,72 
33 
3,28 
8i,4E 
1030,22 
34 
0 , 
25 , 3 oW 
1028,25 
35 
0 , 
23 , oW 
1027,85 
3 6 
0 , 
83 ,oE 
1028,07 
37 
0 , 
92 , oE 
1026,92 
C/3 
lo 
Q 
43 
Du, 
CO 
S 
<D 
a 
c 
o 
z 
cd 
3 
cr 
W 
OBSERVATIONS. 
By Lieut. Parry, in July, 1818 ; from a depth of 80 fms. Tempe- 
rature of the water 33£° of the surface 33°, of the air 32j° 
By Capt. Basil Hall ; from the surface. In July, 1811. 
Taken up by Dr. Berger, about 15 leagues from the West Coast of 
Jutland; depth 23 fms. Dec. 1810 . 
By Dr. Berger ; Calf of Man, Irish Sea. 
By Dr. Berger ; near Hull. 
By mvself; from Barmouth, Wales, near the mouth of the river 
Mawdack. 
From Mr. Tennant ; taken up by Mr. Lushington. 
By Mr. Caldewell, Coast of Canada. Temperature of water 42’, of 
air 50°. 
By Mr. Caldwell ; brought up from a depth of 250 fms. by means 
of a corked bottle. 
By Capt. Hall, in January, 1811. 
By Capt. Hall ; nearly in the middle of the North Atlantic. 
By Capt. Hall ; from the mouth of the Ganges, about 20 miles 
from Calcutta. Water muddy. 
By Capt. Hall ; Coast of Malabar, off Cochin ; some sediment, ap- 
parently vegetable. 
By Mr. Schmidtmeyer, going to South America ; bottle black- 
ened, smell hepatic. 
From Mr. Tennant, by Mr. Lushington, off Colombo, Ceylon. 
By Mr. Schmidtmeyer, in April, 1808. Therm. 84°. 
From Mr. Tennant, by Mr. Lushington. 
By Mr. Schmidtmeyer. 
By Capt. Hall, in August, 181 7 . 
By Capt. Hall, in 1815 ; about 300 miles south of Ceylon. 
By Capt. Hall ; 3 or 400 miles west of Sumatra, June, 1817. 
The specific gravity of the specimens marked * in this and the following Table, being obviously much less than 
common, in consequence of the vicinity of rivers, these specimens have not been taken into account in calculating 
the mean specific gravity of sea-water. 
