of sea waters, in different parts of the ocean , &c. 
169 
Table I. Specific Gravities of Sea Waters. 
Designation 
of Seas. 
03 
— 
° « 
O 
£ g. 
ITj 
Latitude 
Longitude. 
Specif. 
Grav. 
OBSERVATIONS. 
1 
66,50 
68, 3 oW 
I02 5 ,55 
Taken up by Captain Ross, in Sept. 181 S, from a depth of 80 fa- 
thoms, with Sir Humphry Davy’s apparatus. Temperature of the 
water at 80 fms. 30° ; at 200 fms. 29° ; at 400 fins 28,5 ; at670fms. 
25° ; at the surface 33°. Temperature of the air, 30°. Bottle labelled 
in Capt. Ross’s own hand-writing, with all the above particulars. 
2 
74 ’° 
— 
1025,46* 
By Lieut. Parry, from the surface. The ship surrounded by ice in 
every direction. Temperature of the water 31°, of the air 34° ; 8 July, 
1818. 
3 
74 > 5 ° 
59 > 3 ° 
1026,19 
By Lieut. Parry. Temperature of water 32°, of air 36°. 
4 
5 
7 5 ’ 1 4 
7 5 > 1 4 
4 ’ 49 E 
4’49 
1027,27 
1027,27 
By Lieut. Franklin, from the surface, 10 Sept. 1818. 
By Lieut. Franklin, raised with the cylindrical machine, from a 
depth of r b6 fms. Temperature of the water brought up 36°, of the 
air 35° ; 10 September, 1818. 
6 
7 S’S 4 
65, 3 2W 
1022,7 * 
By Captain Ross, from the surface, 4 miles from the land ; 12 Au- 
gust, 1818 . 
a 
<D 
0 
O 
7 
7 S > 54 
65,32 
1025,9 
By Capt. Ross ; from a depth of 80 fms. with Sir H. Davy’s ma- 
chine. Soundings 150 fms. 12 August, 1818. 
0 
0 
8 
76,32 
76,46 
1024,05' 
By Capt. Ross ; from the surface. Soundings 109 fms. 22 August’ 
1818. 
u, 
< 
9 
76,32 
76,46 
1026,22 
By Capt. Ross; from a depth of 80 fms. Temperature 30,5° ; 22 
August, 1818. 
10 
7 6 *33 
1026,64 
By Lieut. Parry; with Sir H. Davy’s machine, from a depth of 80 
fms. Temperature of the water 32°, of air 36° ; 21 Aug. 1818 . 
1 1 
79>57 
ii,!5E 
1026,7 
By Lieut. Franklin, from a depth of 34 fms. Temperature of the 
sea at the surface 30,3°, at 34 fms. 33,2° ; of the air 35,2°. 
12 
80,26 
io, 3 o 
1022,55* 
By Lieut. Franklin, 13 July, from the surface ; ship beset with ice ; 
12 leagues from the Coast of Spitzberg. Temperature of the surface, 
32,5o, of air 38®. 
!3 
80,26 
10,30 
1027,14 
By Lieut. Franklin ; from the bottom, depth of 237 fms. 
'4 
80,26 
10,30 
1027,15 
By Lieut. Franklin : from the bottom, depth of 237 fms. with Dr. 
Marcet’s machine. Temperature of the bottom 35,5° ; 13 July, 1818. 
l S 
80,28 
10,20 
1026,8 
By Lieut. Franklin ; from bott m, depth of 185 fms. surface being 
frozen. Temperature of the bottom 36J°, surface 32§° ; 15 July, 1818. 
16 
80,29 
1 1,0 
1026,84 
By Lieut. Franklin ; from a depth of 305 fms. being the bottom. 
Temperature of the air 36°, of the surface of the sea 32,2° ; 18 July, 
1818. 1 
N. B. The specimens marked * in the three first tables, cannot be taken into account in calculating the mean specific 
gravity of tire waters of the ocean, their saline contents being much diminished either by the vicinity of large masses 
of ice, or of great rivers, which reduce them much below the average standard of density of sea water. 
MDCCCXIX. 
Z 
